Re: [Sursound] Advice on new loudspeaker array... Genelec 8010 speakers?

2015-10-30 Thread Fernando Lopez-Lezcano

On 10/15/2015 01:37 PM, Jörn Nettingsmeier wrote:

On 10/15/2015 10:07 PM, Steven Boardman wrote:

Subs are a must. The more you have, the more even the response around the
room?


Yes, and the better your LF localisation. Ideally, we'd want to do a
separate decode for the subs, not just simple bass management (although
the latter is better than nothing, of course).


I have been doing this in the concerts I do here at Stanford, 24 mains 
in a 12 + 8 + 4 configuration (or 25 in 12 + 8 + 4 + 1) plus up to 8 
subs in a ring. Separate ADT calculated decoders for both (thanks 
Aaron!). Plus DRC calculated filters for best impulse and frequency 
response. The end result once everything is calibrated sounds very good, 
if I may say.


-- Fernando

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Re: [Sursound] Advice on new loudspeaker array... Genelec 8010 speakers?

2015-10-22 Thread Augustine Leudar
Bah... (; hello Charlie hope you're well ! I just realised the x32 has 32
ins but only 22 outs you can expand it but probably end up paying more than
madi or adats...

On Thursday, 22 October 2015, Charlie Richmond 
wrote:

> Doorstop you say?? ;-)
>
> On 21 October 2015 at 17:30, Augustine Leudar  >
> wrote:
>
> > Daw ☺damn you autocorrect.
> >
> > On Thursday, 22 October 2015, Augustine Leudar <
> augustineleu...@gmail.com >
> > wrote:
> >
> > > You should also look at the Behringer x32 - 32 channels, midas preamps,
> > > motorised faders, proven reliability,  works as a usb multichannel
> > > soundcard and door controller.  1000 pounds.
> > >
> > > On Tuesday, 20 October 2015, Michael Chapman  
> > > ');>>
> wrote:
> > >
> > >> Fons Adriaensen wrote (Thu, October 15, 2015 6:47 pm) :
> > >> > On Thu, Oct 15, 2015 at 03:59:46PM +0200, Jörn Nettingsmeier wrote:
> > >> >
> > >> >> We've seen all those outlandish claims of magical waveguides that
> > >> >> are just fractions of the wavelength in diameter and yet shape the
> > >> >> sound so wonderfully that a 20Hz beam will travel all the way to
> the
> > >> >> moon (using the revolutionary VacuProof™ technology that will
> > >> >> finally bring cinema-friendly space battles). The problem is, this
> > >> >> waveshaping is not physically possible.
> > >> >
> > >> > Yes, it's a simple as that - not physically possible.
> > >> >
> > >> > If you think in ambisonic (spherical harmonic) terms it's
> > >> > easy to see why. Orders zero and one correspond to physical
> > >> > quantities, pressure and velocity, so these can be generated
> > >> > directly at any point. Higher order SH can't.
> > >> >
> > >> > Which means that you can have cardioid subs, or even
> > >> > supercardioid ones, but anything expected to create more
> > >> > directional beams will need to be of a size comparable
> > >> > to wavelenght.
> > >> >
> > >> > Can be (and is) done for open-air PA systems using very big
> > >> > arrays. But not in any normal room, there simply isn't the
> > >> > space to do it.
> > >> >
> > >>
> > >> There's something I've missed here ... for several years (as Feynman
> > >> commented  there's a
> point
> > >> when it's too late to ask idiot questions, but here goes;-)> :
> > >>
> > >> If X,Y,Z  correspond to velocity
> > >> then does W correspond to some displacement of (a notional membrane
> say
> > >> in) the aether in Jorn's vacuum of space;-)>
> > >>
> > >> If so ... by extension (always dangerous) ... then don't the next five
> > >> (second order) components relate to acceleration ?
> > >>
> > >>
> > >> To rephrase the question with no idiot presumptions:
> > >> Why, in ambisonics, do we repeatedly refer to velcocity but never
> > >> acceleration?
> > >> (If one exists, then so must the other.)
> > >>
> > >>
> > >> I feel an idiot even asking, so harsh replies accepted ;-)>
> > >>
> > >> Michael
> > >>
> > >>
> > >>
> > >>
> > >>
> > >>
> > >>
> > >> ___
> > >> Sursound mailing list
> > >> Sursound@music.vt.edu 
> > >> https://mail.music.vt.edu/mailman/listinfo/sursound - unsubscribe
> here,
> > >> edit account or options, view archives and so on.
> > >>
> > >
> > >
> > > --
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> > >
> > >
> >
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Re: [Sursound] Advice on new loudspeaker array... Genelec 8010 speakers?

2015-10-22 Thread Ben Bloomberg
We have one with the stage box for a total of 32 outs. ~$3k We took it
apart to check out the analog stage- even replaced a few components. It's a
really good value. The whole thing is OSC controllable too.

Ben

On Thursday, October 22, 2015, Jörn Nettingsmeier <
netti...@stackingdwarves.net> wrote:

> On 10/22/2015 08:27 AM, Augustine Leudar wrote:
>
>> Bah... (; hello Charlie hope you're well ! I just realised the x32 has 32
>> ins but only 22 outs you can expand it but probably end up paying more
>> than
>> madi or adats...
>>
>
> FWIW, there even is a MADI I/O card for the X32/M32. The IEM Graz has one,
> I got to play with it at ICSA. Works.
>
>
> --
> Jörn Nettingsmeier
> Lortzingstr. 11, 45128 Essen, Tel. +49 177 7937487
>
> Meister für Veranstaltungstechnik (Bühne/Studio)
> Tonmeister VDT
>
> http://stackingdwarves.net
>
> ___
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Re: [Sursound] Advice on new loudspeaker array... Genelec 8010 speakers?

2015-10-22 Thread Jörn Nettingsmeier

On 10/22/2015 08:27 AM, Augustine Leudar wrote:

Bah... (; hello Charlie hope you're well ! I just realised the x32 has 32
ins but only 22 outs you can expand it but probably end up paying more than
madi or adats...


FWIW, there even is a MADI I/O card for the X32/M32. The IEM Graz has 
one, I got to play with it at ICSA. Works.



--
Jörn Nettingsmeier
Lortzingstr. 11, 45128 Essen, Tel. +49 177 7937487

Meister für Veranstaltungstechnik (Bühne/Studio)
Tonmeister VDT

http://stackingdwarves.net

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Re: [Sursound] Advice on new loudspeaker array... Genelec 8010 speakers?

2015-10-21 Thread Charlie Richmond
Doorstop you say?? ;-)

On 21 October 2015 at 17:30, Augustine Leudar 
wrote:

> Daw ☺damn you autocorrect.
>
> On Thursday, 22 October 2015, Augustine Leudar 
> wrote:
>
> > You should also look at the Behringer x32 - 32 channels, midas preamps,
> > motorised faders, proven reliability,  works as a usb multichannel
> > soundcard and door controller.  1000 pounds.
> >
> > On Tuesday, 20 October 2015, Michael Chapman  > > wrote:
> >
> >> Fons Adriaensen wrote (Thu, October 15, 2015 6:47 pm) :
> >> > On Thu, Oct 15, 2015 at 03:59:46PM +0200, Jörn Nettingsmeier wrote:
> >> >
> >> >> We've seen all those outlandish claims of magical waveguides that
> >> >> are just fractions of the wavelength in diameter and yet shape the
> >> >> sound so wonderfully that a 20Hz beam will travel all the way to the
> >> >> moon (using the revolutionary VacuProof™ technology that will
> >> >> finally bring cinema-friendly space battles). The problem is, this
> >> >> waveshaping is not physically possible.
> >> >
> >> > Yes, it's a simple as that - not physically possible.
> >> >
> >> > If you think in ambisonic (spherical harmonic) terms it's
> >> > easy to see why. Orders zero and one correspond to physical
> >> > quantities, pressure and velocity, so these can be generated
> >> > directly at any point. Higher order SH can't.
> >> >
> >> > Which means that you can have cardioid subs, or even
> >> > supercardioid ones, but anything expected to create more
> >> > directional beams will need to be of a size comparable
> >> > to wavelenght.
> >> >
> >> > Can be (and is) done for open-air PA systems using very big
> >> > arrays. But not in any normal room, there simply isn't the
> >> > space to do it.
> >> >
> >>
> >> There's something I've missed here ... for several years (as Feynman
> >> commented  there's a point
> >> when it's too late to ask idiot questions, but here goes;-)> :
> >>
> >> If X,Y,Z  correspond to velocity
> >> then does W correspond to some displacement of (a notional membrane say
> >> in) the aether in Jorn's vacuum of space;-)>
> >>
> >> If so ... by extension (always dangerous) ... then don't the next five
> >> (second order) components relate to acceleration ?
> >>
> >>
> >> To rephrase the question with no idiot presumptions:
> >> Why, in ambisonics, do we repeatedly refer to velcocity but never
> >> acceleration?
> >> (If one exists, then so must the other.)
> >>
> >>
> >> I feel an idiot even asking, so harsh replies accepted ;-)>
> >>
> >> Michael
> >>
> >>
> >>
> >>
> >>
> >>
> >>
> >> ___
> >> Sursound mailing list
> >> Sursound@music.vt.edu
> >> https://mail.music.vt.edu/mailman/listinfo/sursound - unsubscribe here,
> >> edit account or options, view archives and so on.
> >>
> >
> >
> > --
> > www.augustineleudar.com
> >
> >
>
> --
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Re: [Sursound] Advice on new loudspeaker array... Genelec 8010 speakers?

2015-10-21 Thread Augustine Leudar
Daw ☺damn you autocorrect.

On Thursday, 22 October 2015, Augustine Leudar 
wrote:

> You should also look at the Behringer x32 - 32 channels, midas preamps,
> motorised faders, proven reliability,  works as a usb multichannel
> soundcard and door controller.  1000 pounds.
>
> On Tuesday, 20 October 2015, Michael Chapman  > wrote:
>
>> Fons Adriaensen wrote (Thu, October 15, 2015 6:47 pm) :
>> > On Thu, Oct 15, 2015 at 03:59:46PM +0200, Jörn Nettingsmeier wrote:
>> >
>> >> We've seen all those outlandish claims of magical waveguides that
>> >> are just fractions of the wavelength in diameter and yet shape the
>> >> sound so wonderfully that a 20Hz beam will travel all the way to the
>> >> moon (using the revolutionary VacuProof™ technology that will
>> >> finally bring cinema-friendly space battles). The problem is, this
>> >> waveshaping is not physically possible.
>> >
>> > Yes, it's a simple as that - not physically possible.
>> >
>> > If you think in ambisonic (spherical harmonic) terms it's
>> > easy to see why. Orders zero and one correspond to physical
>> > quantities, pressure and velocity, so these can be generated
>> > directly at any point. Higher order SH can't.
>> >
>> > Which means that you can have cardioid subs, or even
>> > supercardioid ones, but anything expected to create more
>> > directional beams will need to be of a size comparable
>> > to wavelenght.
>> >
>> > Can be (and is) done for open-air PA systems using very big
>> > arrays. But not in any normal room, there simply isn't the
>> > space to do it.
>> >
>>
>> There's something I've missed here ... for several years (as Feynman
>> commented  there's a point
>> when it's too late to ask idiot questions, but here goes;-)> :
>>
>> If X,Y,Z  correspond to velocity
>> then does W correspond to some displacement of (a notional membrane say
>> in) the aether in Jorn's vacuum of space;-)>
>>
>> If so ... by extension (always dangerous) ... then don't the next five
>> (second order) components relate to acceleration ?
>>
>>
>> To rephrase the question with no idiot presumptions:
>> Why, in ambisonics, do we repeatedly refer to velcocity but never
>> acceleration?
>> (If one exists, then so must the other.)
>>
>>
>> I feel an idiot even asking, so harsh replies accepted ;-)>
>>
>> Michael
>>
>>
>>
>>
>>
>>
>>
>> ___
>> Sursound mailing list
>> Sursound@music.vt.edu
>> https://mail.music.vt.edu/mailman/listinfo/sursound - unsubscribe here,
>> edit account or options, view archives and so on.
>>
>
>
> --
> www.augustineleudar.com
>
>

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Re: [Sursound] Advice on new loudspeaker array... Genelec 8010 speakers?

2015-10-21 Thread Augustine Leudar
You should also look at the Behringer x32 - 32 channels, midas preamps,
motorised faders, proven reliability,  works as a usb multichannel
soundcard and door controller.  1000 pounds.

On Tuesday, 20 October 2015, Michael Chapman  wrote:

> Fons Adriaensen wrote (Thu, October 15, 2015 6:47 pm) :
> > On Thu, Oct 15, 2015 at 03:59:46PM +0200, Jörn Nettingsmeier wrote:
> >
> >> We've seen all those outlandish claims of magical waveguides that
> >> are just fractions of the wavelength in diameter and yet shape the
> >> sound so wonderfully that a 20Hz beam will travel all the way to the
> >> moon (using the revolutionary VacuProof™ technology that will
> >> finally bring cinema-friendly space battles). The problem is, this
> >> waveshaping is not physically possible.
> >
> > Yes, it's a simple as that - not physically possible.
> >
> > If you think in ambisonic (spherical harmonic) terms it's
> > easy to see why. Orders zero and one correspond to physical
> > quantities, pressure and velocity, so these can be generated
> > directly at any point. Higher order SH can't.
> >
> > Which means that you can have cardioid subs, or even
> > supercardioid ones, but anything expected to create more
> > directional beams will need to be of a size comparable
> > to wavelenght.
> >
> > Can be (and is) done for open-air PA systems using very big
> > arrays. But not in any normal room, there simply isn't the
> > space to do it.
> >
>
> There's something I've missed here ... for several years (as Feynman
> commented  there's a point
> when it's too late to ask idiot questions, but here goes;-)> :
>
> If X,Y,Z  correspond to velocity
> then does W correspond to some displacement of (a notional membrane say
> in) the aether in Jorn's vacuum of space;-)>
>
> If so ... by extension (always dangerous) ... then don't the next five
> (second order) components relate to acceleration ?
>
>
> To rephrase the question with no idiot presumptions:
> Why, in ambisonics, do we repeatedly refer to velcocity but never
> acceleration?
> (If one exists, then so must the other.)
>
>
> I feel an idiot even asking, so harsh replies accepted ;-)>
>
> Michael
>
>
>
>
>
>
>
> ___
> Sursound mailing list
> Sursound@music.vt.edu 
> https://mail.music.vt.edu/mailman/listinfo/sursound - unsubscribe here,
> edit account or options, view archives and so on.
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Re: [Sursound] Advice on new loudspeaker array... Genelec 8010 speakers?

2015-10-20 Thread Michael Chapman
Fons Adriaensen wrote (Thu, October 15, 2015 6:47 pm) :
> On Thu, Oct 15, 2015 at 03:59:46PM +0200, Jörn Nettingsmeier wrote:
>
>> We've seen all those outlandish claims of magical waveguides that
>> are just fractions of the wavelength in diameter and yet shape the
>> sound so wonderfully that a 20Hz beam will travel all the way to the
>> moon (using the revolutionary VacuProof™ technology that will
>> finally bring cinema-friendly space battles). The problem is, this
>> waveshaping is not physically possible.
>
> Yes, it's a simple as that - not physically possible.
>
> If you think in ambisonic (spherical harmonic) terms it's
> easy to see why. Orders zero and one correspond to physical
> quantities, pressure and velocity, so these can be generated
> directly at any point. Higher order SH can't.
>
> Which means that you can have cardioid subs, or even
> supercardioid ones, but anything expected to create more
> directional beams will need to be of a size comparable
> to wavelenght.
>
> Can be (and is) done for open-air PA systems using very big
> arrays. But not in any normal room, there simply isn't the
> space to do it.
>

There's something I've missed here ... for several years (as Feynman
commented  there's a point
when it's too late to ask idiot questions, but here goes;-)> :

If X,Y,Z  correspond to velocity
then does W correspond to some displacement of (a notional membrane say
in) the aether in Jorn's vacuum of space;-)>

If so ... by extension (always dangerous) ... then don't the next five
(second order) components relate to acceleration ?


To rephrase the question with no idiot presumptions:
Why, in ambisonics, do we repeatedly refer to velcocity but never
acceleration?
(If one exists, then so must the other.)


I feel an idiot even asking, so harsh replies accepted ;-)>

Michael







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Re: [Sursound] Advice on new loudspeaker array... Genelec 8010 speakers?

2015-10-20 Thread Michael Chapman
> Charles Veasey wrote:
>> Martin -
>>
>> To clarify the use of the subs within a tetrahedral array, it would
>> require
>> the subs to be elevated off the floor?
>
> At least one, as described by Michael.
>

I should apologise for the brevity of my respone.
The problem (for me at least) is that solid / three-dimensional geometry
is not 'everyday' (we live in a 3-D world, but when I leave my triangles
and rectangles behind it all gets sticky ...) and (worse) when one does
finally see the 'solution' it is so bl...ing obvious one forgets to
explain it.

If anyone is still pondering:

Make a paper/card tetrahedron (very easy).
Throw it in the air.
It lands (hopefully) with one face and three points on the floor.

If the 'points' are your speakers then there you go.
The fourth speaker not only needs suspending, it is dangling just over the
sweet spot ... ;-(>

(Of course some modellers place speakers at the center of each surface.
Not a good idea for the above.
(But for non-tetrahedrons it can give a difference: a cube has six
surfaces but eight 'points' ...))

Think I've stated the obvious, but it may aid someone, somewhere ...

Michael



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Re: [Sursound] Advice on new loudspeaker array... Genelec 8010 speakers?

2015-10-20 Thread Martin Leese
Charles Veasey wrote:
> Martin -
>
> To clarify the use of the subs within a tetrahedral array, it would require
> the subs to be elevated off the floor?

At least one, as described by Michael.

> Given the weight of most subs, this
> seems a bit difficult in practice. Thoughts?

Then try three subs (arranged in a triangle)
to decode to 360 deg horizontal-only.  For
localisation, three is not as good as four but is
better than two.

Note this all assumes that the standing waves
excited in the room will not screw-up any hope
of low-frequency localisation.  Keeping the
subs away from the room corners will help with
this.  (Your mileage may vary.)

Regards,
Martin
-- 
Martin J Leese
E-mail: martin.leese  stanfordalumni.org
Web: http://members.tripod.com/martin_leese/
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Re: [Sursound] Advice on new loudspeaker array... Genelec 8010 speakers?

2015-10-19 Thread Bo-Erik Sandholm
There is very good availability of speakers that are low Cost and designed
for 80Hz and upp... They usually come in 5 pack and include one sub woofer ☺
The are usually not powered except for The subwoofer.
I use Kef eggs...
The decoding of low frequency signals is not really relevant for small
venues.

Many of us knows this...

Br
Bo-Erik
Den 17 okt 2015 10:42 fm skrev "Jörn Nettingsmeier" <
netti...@stackingdwarves.net>:
>
> On 10/16/2015 08:34 PM, Fons Adriaensen wrote:
>>
>> Next Ambdec (already in use here, and to be released soon)
>> can do this.
>
> <..>
>>
>> 1. Bandsplitting, four options:
>>
>>- single band
>>- single band with sub xover
>>- dual band
>>- dual band with sub xover
>>
>>so in the latter case you'd have 3 bands. The
>>sub filter is 4th order.
>>
>> 2. For each band you can add as many matrices
>> as you want, each of them handling user
>> defined subsets of inputs and outputs.
>>
>> 3. Matrix outputs are added, near-field compensation,
>> delay and gain control are done for each output.
>>
>> Processing can be multi-threaded on SMP hardware.
>>
>> The 'sub' band you could use to drive subs, or to
>> crossover to a lower order decode using the full-
>> range speakers. Of course if you want to do both
>> and dual band as well, you'd need four bands.
>> I'll consider that if there is some press^H^H^H^H^H
>> interest.
>
>
> Consider this interest :-D Where do I sign up as alpha tester? (a lousy
one since I don't have too many speakers at the moment...)
>
> I don't think four bands are strictly necessary... If there are subs, it
seems an odd choice to additionally spread the low-mids across mid-hi
speakers. Better to move the xover a bit higher if the mid-hi speakers need
some more help.
>
>
> --
> Jörn Nettingsmeier
> Lortzingstr. 11, 45128 Essen, Tel. +49 177 7937487
>
> Meister für Veranstaltungstechnik (Bühne/Studio)
> Tonmeister VDT
>
> http://stackingdwarves.net
>
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Re: [Sursound] Advice on new loudspeaker array... Genelec 8010 speakers?

2015-10-19 Thread Michael Chapman
> Martin -
>
> To clarify the use of the subs within a tetrahedral array, it would
> require
> the subs to be elevated off the floor? Given the weight of most subs, this
> seems a bit difficult in practice. Thoughts?
>

At the worst/best ... only one needs lifting.

So just a bit of fishing* line for that one ... (?).

But p'haps I should let Martin reply ... twas his proposal.

Michael


*if you fish for sharks ...

> thanks,
> Charles
>
>
>
> On Fri, Oct 16, 2015 at 10:55 AM, Martin Leese <
> martin.le...@stanfordalumni.org> wrote:
>
>> Charles Veasey wrote:
>> > Thanks everyone for the information!
>> >
>> > Using four subs was mentioned a couple of times. I've never used or
>> > experienced more than two in an array. What is the justification? I
>> assume
>> > that given a square room, you'd place one in each corner?
>>
>> With Ambisonics, using three subs (arranged
>> in a triangle) you can decode to 360°
>> horizontal-only.  Using four subs (arranged in
>> a tetrahedron) you can decode to full-sphere.
>> Note that, because the subs are sent only low
>> frequencies, you can use a single-band
>> "velocity" decoder.
>>
>> With a dual-band Ambisonic decoder, which
>> also handles higher frequencies, you need
>> more speakers than three/four.
>>
>> Regards,
>> Martin
>> --
>> Martin J Leese
>> E-mail: martin.leese  stanfordalumni.org
>> Web: http://members.tripod.com/martin_leese/
>> ___
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Re: [Sursound] Advice on new loudspeaker array... Genelec 8010 speakers?

2015-10-19 Thread Charles Veasey
Martin -

To clarify the use of the subs within a tetrahedral array, it would require
the subs to be elevated off the floor? Given the weight of most subs, this
seems a bit difficult in practice. Thoughts?

thanks,
Charles



On Fri, Oct 16, 2015 at 10:55 AM, Martin Leese <
martin.le...@stanfordalumni.org> wrote:

> Charles Veasey wrote:
> > Thanks everyone for the information!
> >
> > Using four subs was mentioned a couple of times. I've never used or
> > experienced more than two in an array. What is the justification? I
> assume
> > that given a square room, you'd place one in each corner?
>
> With Ambisonics, using three subs (arranged
> in a triangle) you can decode to 360°
> horizontal-only.  Using four subs (arranged in
> a tetrahedron) you can decode to full-sphere.
> Note that, because the subs are sent only low
> frequencies, you can use a single-band
> "velocity" decoder.
>
> With a dual-band Ambisonic decoder, which
> also handles higher frequencies, you need
> more speakers than three/four.
>
> Regards,
> Martin
> --
> Martin J Leese
> E-mail: martin.leese  stanfordalumni.org
> Web: http://members.tripod.com/martin_leese/
> ___
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Re: [Sursound] Advice on new loudspeaker array... Genelec 8010 speakers?

2015-10-17 Thread Jörn Nettingsmeier

On 10/16/2015 08:34 PM, Fons Adriaensen wrote:

Next Ambdec (already in use here, and to be released soon)
can do this.

<..>

1. Bandsplitting, four options:

   - single band
   - single band with sub xover
   - dual band
   - dual band with sub xover

   so in the latter case you'd have 3 bands. The
   sub filter is 4th order.

2. For each band you can add as many matrices
as you want, each of them handling user
defined subsets of inputs and outputs.

3. Matrix outputs are added, near-field compensation,
delay and gain control are done for each output.

Processing can be multi-threaded on SMP hardware.

The 'sub' band you could use to drive subs, or to
crossover to a lower order decode using the full-
range speakers. Of course if you want to do both
and dual band as well, you'd need four bands.
I'll consider that if there is some press^H^H^H^H^H
interest.


Consider this interest :-D Where do I sign up as alpha tester? (a lousy 
one since I don't have too many speakers at the moment...)


I don't think four bands are strictly necessary... If there are subs, it 
seems an odd choice to additionally spread the low-mids across mid-hi 
speakers. Better to move the xover a bit higher if the mid-hi speakers 
need some more help.



--
Jörn Nettingsmeier
Lortzingstr. 11, 45128 Essen, Tel. +49 177 7937487

Meister für Veranstaltungstechnik (Bühne/Studio)
Tonmeister VDT

http://stackingdwarves.net

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Re: [Sursound] Advice on new loudspeaker array... Genelec 8010 speakers?

2015-10-16 Thread Fons Adriaensen
On Fri, Oct 16, 2015 at 01:15:22PM +0200, Jörn Nettingsmeier wrote:

> Intriguing idea, that. So we would apply zero-phase high-pass
> filters to the second and higher components?
> Should be nice for a test run, but how to keep latency down for live
> electronics and A/V sync? How would we phase-align an IIR filter?
> Allpasses on the lower components?

For example.

Next Ambdec (already in use here, and to be released soon)
can do this. 

It's actually a Python class (and a Jack client of course),
and that's done so you can really configure it as you want.
For a fixed decoder all you need is a small Python script
which could include the configuration data, or read it from
files. But you can also add a pyqt5 GUI (the unfinished part
ATM) to get something similar to the current Ambdec, or an
OSC interface, etc.

Processing is done in three stages:

1. Bandsplitting, four options:

  - single band
  - single band with sub xover
  - dual band
  - dual band with sub xover

  so in the latter case you'd have 3 bands. The
  sub filter is 4th order.

2. For each band you can add as many matrices
   as you want, each of them handling user
   defined subsets of inputs and outputs.
 
3. Matrix outputs are added, near-field compensation,
   delay and gain control are done for each output.

Processing can be multi-threaded on SMP hardware.

The 'sub' band you could use to drive subs, or to
crossover to a lower order decode using the full-
range speakers. Of course if you want to do both
and dual band as well, you'd need four bands.
I'll consider that if there is some press^H^H^H^H^H
interest.

Ciao,

-- 
FA

A world of exhaustive, reliable metadata would be an utopia.
It's also a pipe-dream, founded on self-delusion, nerd hubris
and hysterically inflated market opportunities. (Cory Doctorow)

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Re: [Sursound] Advice on new loudspeaker array... Genelec 8010 speakers?

2015-10-16 Thread Martin Leese
Charles Veasey wrote:
> Thanks everyone for the information!
>
> Using four subs was mentioned a couple of times. I've never used or
> experienced more than two in an array. What is the justification? I assume
> that given a square room, you'd place one in each corner?

With Ambisonics, using three subs (arranged
in a triangle) you can decode to 360°
horizontal-only.  Using four subs (arranged in
a tetrahedron) you can decode to full-sphere.
Note that, because the subs are sent only low
frequencies, you can use a single-band
"velocity" decoder.

With a dual-band Ambisonic decoder, which
also handles higher frequencies, you need
more speakers than three/four.

Regards,
Martin
-- 
Martin J Leese
E-mail: martin.leese  stanfordalumni.org
Web: http://members.tripod.com/martin_leese/
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Re: [Sursound] Advice on new loudspeaker array... Genelec 8010 speakers?

2015-10-16 Thread Ilpo Martikainen
Different dispersion patterns of different drivers may not be a decoder 
question only, but should be solved in the acoustic domain. That has been the 
whole idea of so called waveguides, to match the directivity of a higher 
frequency driver - MF or HF - to the directivity of the lower frequency driver 
around crossover. Otherwise there will be a bump in power response as the 
higher frequency driver is practically omnidirectional at its low end while the 
lower frequency driver gets directive in its upper end. 

Ilpo

> On 16 Oct 2015, at 19:27, David McGriffy <da...@mcgriffy.com> wrote:
> 
> I've been thinking about how this discussion might apply to a couple of
> things I'm working on and it seems to me there are two different problems
> here.
> 
> First, there is the issue of higher order mics often not really being
> higher order at low frequencies.  But isn't this really a problem of
> encoding and not decoding?  It seems like we shouldn't have to know
> anything about the mic once we are in B-format.  And such considerations
> would not apply to synthetically panned higher order signals, right?
> 
> The other issues around cost of low frequency drivers, the ability to place
> the physically larger, heavier speakers, dispersion patterns of different
> drivers, etc. are certainly decoder questions.  With simple, linear
> decoders, one would have an 'ambisonic crossover' that not only divides
> frequency bands but takes care of scaling the different order components,
> followed by two or more decoders.  Since a parametric decoder is already
> working in the frequency domain, one could just vary the decode parameters
> on a bin by bin basis, thus generating all the outputs from a single set of
> input FFT's.
> 
> But these issues are about really decoding to speakers, which would not
> apply to creating say 7.1 stems to be later mixed and sent to a bass
> managed theater system, right?  Or to put it another way, crossed over
> decoders are doing the bass management in the ambisonic domain.
> 
> David
> VVAudio
> 
> On Fri, Oct 16, 2015 at 8:19 AM, Peter Lennox <p.len...@derby.ac.uk> wrote:
> 
>> plus, with the large numbers of speakers, it's cheaper and easier to cross
>> over in the b-format 'pinchpoint' than in the speaker feeds.
>> ppl
>> 
>> Dr. Peter Lennox
>> Senior Fellow of the Higher Education Academy
>> Senior Lecturer in Perception
>> College of Arts
>> University of Derby
>> 
>> Tel: 01332 593155
>> 
>> From: Sursound [sursound-boun...@music.vt.edu] On Behalf Of Steven
>> Boardman [boardroomout...@gmail.com]
>> Sent: 16 October 2015 14:14
>> To: Surround Sound discussion group
>> Subject: Re: [Sursound] Advice on new loudspeaker array... Genelec 8010
>> speakers?
>> 
>> This is something I have alluded to before.
>> There is no need to have multiple transducers in the same box with
>> ambisonics.. In fact it should be more accurate, economical, aesthetic, and
>> space saving to have each transducer at its own separate point in space.
>> Tweeters are more directional so more are needed,  they are also cheaper.
>> Going all the way down the frequency range to the least directional and
>> most expensive, woofers and subs.
>> Separate decodes could be done for each transducer bandwidth, rotating the
>> soundfield to align. This would also benefit the transducer crossover
>> point, as there would be less interference from proximity. It would also
>> help room response, as crossovers could be tweaked and balanced on the fly.
>> Which is also alot of fun!
>> 
>> Steve
>> On 16 Oct 2015 12:47, "Peter Lennox" <p.len...@derby.ac.uk> wrote:
>> 
>>> we used a much cruder version of this back in 2002 - decoding a
>>> hemispherical 32 speaker array to second order, but crossed over the
>>> B-format at 90Hz (I think) to a horizontal-only 8-sub array, decoded in
>> 1st
>>> order. This was on the basis that we couldn't fly the subs, and anyway,
>>> elevation discernment, being largely due to pinnae affects, was not
>>> appealed to by the subs anyway. Had to work on the time alignment (the
>> sub
>>> decoder was analogue, the mid'n'tops 32 speaker array done in software)
>> and
>>> spatial alignment (rotating the subfield to match t'other, in the
>> b-format
>>> feed). It worked well, though could have been further refined; it was a
>>> one-off installation.
>>> But the principle of using decreasing order with decreasing frequency
>> made
>>> sense from the point of view of efficient use of transd

Re: [Sursound] Advice on new loudspeaker array... Genelec 8010 speakers?

2015-10-16 Thread David McGriffy
I certainly didn't mean to discount everything that happens after the
decoder, driver design, room acoustics and such.  Probably more important
and should be taken care of first and then what can't be fixed there maybe
the decoder can take into account somehow.  Encoders and decoders are just
the things that I happen to work on every day.  Sadly no budget for 32
Genelecs around here regardless of the number of subs.

David

On Fri, Oct 16, 2015 at 12:19 PM, Ilpo Martikainen <
ilpo.martikai...@genelec.com> wrote:

> Different dispersion patterns of different drivers may not be a decoder
> question only, but should be solved in the acoustic domain. That has been
> the whole idea of so called waveguides, to match the directivity of a
> higher frequency driver - MF or HF - to the directivity of the lower
> frequency driver around crossover. Otherwise there will be a bump in power
> response as the higher frequency driver is practically omnidirectional at
> its low end while the lower frequency driver gets directive in its upper
> end.
>
> Ilpo
>
> > On 16 Oct 2015, at 19:27, David McGriffy <da...@mcgriffy.com> wrote:
> >
> > I've been thinking about how this discussion might apply to a couple of
> > things I'm working on and it seems to me there are two different problems
> > here.
> >
> > First, there is the issue of higher order mics often not really being
> > higher order at low frequencies.  But isn't this really a problem of
> > encoding and not decoding?  It seems like we shouldn't have to know
> > anything about the mic once we are in B-format.  And such considerations
> > would not apply to synthetically panned higher order signals, right?
> >
> > The other issues around cost of low frequency drivers, the ability to
> place
> > the physically larger, heavier speakers, dispersion patterns of different
> > drivers, etc. are certainly decoder questions.  With simple, linear
> > decoders, one would have an 'ambisonic crossover' that not only divides
> > frequency bands but takes care of scaling the different order components,
> > followed by two or more decoders.  Since a parametric decoder is already
> > working in the frequency domain, one could just vary the decode
> parameters
> > on a bin by bin basis, thus generating all the outputs from a single set
> of
> > input FFT's.
> >
> > But these issues are about really decoding to speakers, which would not
> > apply to creating say 7.1 stems to be later mixed and sent to a bass
> > managed theater system, right?  Or to put it another way, crossed over
> > decoders are doing the bass management in the ambisonic domain.
> >
> > David
> > VVAudio
> >
> > On Fri, Oct 16, 2015 at 8:19 AM, Peter Lennox <p.len...@derby.ac.uk>
> wrote:
> >
> >> plus, with the large numbers of speakers, it's cheaper and easier to
> cross
> >> over in the b-format 'pinchpoint' than in the speaker feeds.
> >> ppl
> >>
> >> Dr. Peter Lennox
> >> Senior Fellow of the Higher Education Academy
> >> Senior Lecturer in Perception
> >> College of Arts
> >> University of Derby
> >>
> >> Tel: 01332 593155
> >> 
> >> From: Sursound [sursound-boun...@music.vt.edu] On Behalf Of Steven
> >> Boardman [boardroomout...@gmail.com]
> >> Sent: 16 October 2015 14:14
> >> To: Surround Sound discussion group
> >> Subject: Re: [Sursound] Advice on new loudspeaker array... Genelec 8010
> >> speakers?
> >>
> >> This is something I have alluded to before.
> >> There is no need to have multiple transducers in the same box with
> >> ambisonics.. In fact it should be more accurate, economical, aesthetic,
> and
> >> space saving to have each transducer at its own separate point in space.
> >> Tweeters are more directional so more are needed,  they are also
> cheaper.
> >> Going all the way down the frequency range to the least directional and
> >> most expensive, woofers and subs.
> >> Separate decodes could be done for each transducer bandwidth, rotating
> the
> >> soundfield to align. This would also benefit the transducer crossover
> >> point, as there would be less interference from proximity. It would also
> >> help room response, as crossovers could be tweaked and balanced on the
> fly.
> >> Which is also alot of fun!
> >>
> >> Steve
> >> On 16 Oct 2015 12:47, "Peter Lennox" <p.len...@derby.ac.uk> wrote:
> >>
> >>> we used a much cruder version of this back in 2002 

Re: [Sursound] Advice on new loudspeaker array... Genelec 8010 speakers?

2015-10-16 Thread Peter Lennox
we used a much cruder version of this back in 2002 - decoding a hemispherical 
32 speaker array to second order, but crossed over the B-format at 90Hz (I 
think) to a horizontal-only 8-sub array, decoded in 1st order. This was on the 
basis that we couldn't fly the subs, and anyway, elevation discernment, being 
largely due to pinnae affects, was not appealed to by the subs anyway. Had to 
work on the time alignment (the sub decoder was analogue, the mid'n'tops 32 
speaker array done in software) and spatial alignment (rotating the subfield to 
match t'other, in the b-format feed). It worked well, though could have been 
further refined; it was a one-off installation.
But the principle of using decreasing order with decreasing frequency made 
sense from the point of view of efficient use of transducers.

It made me wonder whether the same principle extends the other way - increasing 
order with increasing frequency, to make up for the deficiencies in spatial 
resolution of lower orders at HF. 
Given that it should now be reasonably 'easy' to align the fields of multiple 
cells - even having differnt numbers of speakers for each frequency band, there 
might be less reason to assume that  point source speakers are strictly 
necessary.
We're still using speakers designed as stereo projection systems, and it could 
even be that starting again, thinking about real-world usages of ambisonics, 
that one could revisit the speaker design theories.

Going off on a tangent, it might be that (as others have experimented with, 
before) that the trasnducer design for the programme material which is 
'ambient' (reflected sound, from no particular source, and therefor not 
requiring precision in phantom imagery) might differ than that for the'virtual 
sources' ('images')

So I experimented with 12 very modest nxt-type flat panels which were rotated 
thru' 90 deg. to what you'd expect, as it were - that is, they didn't 'face' 
the centre but were at right angles to it. The results (given the modest set 
up) were better than they had any right to be - most especially for ambient and 
distant sounds. 
I know they used to use multiple dipoles on the walls in cinemas for conveying 
the surround channels of 5.1 material (they might still do, I never go to the 
cinema because of the loud, poor sound) - so this seems to be a similar 
principle.

Just a few ramblings
cheers
Dr. Peter Lennox
Senior Fellow of the Higher Education Academy
Senior Lecturer in Perception
College of Arts
University of Derby

Tel: 01332 593155

From: Sursound [sursound-boun...@music.vt.edu] On Behalf Of Jörn Nettingsmeier 
[netti...@stackingdwarves.net]
Sent: 16 October 2015 12:15
To: sursound@music.vt.edu
Subject: Re: [Sursound] Advice on new loudspeaker array... Genelec 8010 
speakers?

On 10/15/2015 10:51 PM, Dave Malham wrote:
> One of the things that should be investigated in conjunction with higher
> order Ambisonics material would be to "fade down" the higher order
> components as the frequency drops, thus spreading the bass over more
> speakers, reducing the strain on the individual speakers whilst maintaining
> the spectral balance - hey, wasn't that Richard Lee's Powered Integrated
> Sub concept from several years ago?? Doesn't help with first order materiel
> but
>



Intriguing idea, that. So we would apply zero-phase high-pass filters to
the second and higher components?
Should be nice for a test run, but how to keep latency down for live
electronics and A/V sync? How would we phase-align an IIR filter?
Allpasses on the lower components?

The spectral balance would be maintained despite the filters, since
we're in LF, where each new order "takes away" as much as it "adds", so
to say. Unlike at HF, where we have to add energies and any such
filtering throws the spectral balance of kilter, as Eigenmike users will
know...

--
Jörn Nettingsmeier
Lortzingstr. 11, 45128 Essen, Tel. +49 177 7937487

Meister für Veranstaltungstechnik (Bühne/Studio)
Tonmeister VDT

http://stackingdwarves.net

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Re: [Sursound] Advice on new loudspeaker array... Genelec 8010 speakers?

2015-10-16 Thread Jörn Nettingsmeier

On 10/15/2015 10:51 PM, Dave Malham wrote:

One of the things that should be investigated in conjunction with higher
order Ambisonics material would be to "fade down" the higher order
components as the frequency drops, thus spreading the bass over more
speakers, reducing the strain on the individual speakers whilst maintaining
the spectral balance - hey, wasn't that Richard Lee's Powered Integrated
Sub concept from several years ago?? Doesn't help with first order materiel
but





Intriguing idea, that. So we would apply zero-phase high-pass filters to 
the second and higher components?
Should be nice for a test run, but how to keep latency down for live 
electronics and A/V sync? How would we phase-align an IIR filter? 
Allpasses on the lower components?


The spectral balance would be maintained despite the filters, since 
we're in LF, where each new order "takes away" as much as it "adds", so 
to say. Unlike at HF, where we have to add energies and any such 
filtering throws the spectral balance of kilter, as Eigenmike users will 
know...


--
Jörn Nettingsmeier
Lortzingstr. 11, 45128 Essen, Tel. +49 177 7937487

Meister für Veranstaltungstechnik (Bühne/Studio)
Tonmeister VDT

http://stackingdwarves.net

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[Sursound] Advice on new loudspeaker array... Genelec 8010 speakers?

2015-10-16 Thread Augustine Leudar
Sure there's not a lot of bass coming out of these things but they work
well enough for human voice (not Barry white) but I think we both agree
that a wide dispersal (across all frequencies) is advantageous in larger
installations (probably smaller ones too) and  to suggest there is not a
difference between how widely or narrowly a speaker disperses energy
especial higher frequencies isn't entirely correct. Therefore off axis
response should be considered . Also cabinet and driver design must surely
affect SPL levels in general off axis. Eg. Spherical driver should anyone
ever invent one would put all frequencies out in all directions a half
sphere (more or less normal speakers)
180 degrees etc.
I appreciate your need for full range monitoring I also work as a sound
engineer as well and do all my own tech for arts events and also lose
clients if results aren't good - got to pay the bills and I am only
interested in what actually works .
I am curious also about your comment that adat was unreliable - is this
your experience in general or just the original ada8000 ? The ada8200 has
no reports of unreliability since the.changed PSU. Unless he needs
his.computer more than ten metres from adat it puts the cost of 32 channels
from around 1500 euros to andiamo and madi around 5000 euros .

On Thursday, 15 October 2015, Jörn Nettingsmeier <
netti...@stackingdwarves.net> wrote:
> On 10/15/2015 03:59 PM, Jörn Nettingsmeier wrote:
>>
>> On 10/15/2015 03:41 PM, Augustine Leudar wrote:
>>>
>>> What can I say Jorn - we have some and they work - not as well as
>>> adverstised obviously but strip away the hype they have something thta
>>> mor
>>> eor less does as described -  you'll have to wait a while for those
>>> measurements ;)
>>
>> For now, the low cutoff frequency would be enough.
>>
>> Mind you, I'm not saying that these things cannot be great creative
>> tools. But I'm a sound engineer. I need to deal with the artistic output
>> of other people, in such a way that they are not going to ram the
>> speakers down my throat because half of the spectrum is missing. I need
>> general-purpose speakers, which on a bad day means ten octaves and 110dB
>> peak SPL.
>>
>> We've seen all those outlandish claims of magical waveguides that are
>> just fractions of the wavelength in diameter and yet shape the sound so
>> wonderfully that a 20Hz beam will travel all the way to the moon (using
>> the revolutionary VacuProof™ technology that will finally bring
>> cinema-friendly space battles). The problem is, this waveshaping is not
>> physically possible. You can make a plane wave, but unless it's a huge
>> plane wave with respect to frequency, the edge dispersion will make it
>> fall apart. In the end, it's just a point source with a little dent in
>> it. I don't even need to wait for measurements.
>>
>> Even if you consider ultrasonic systems: at some point, the ultrasound
>> has to be demodulated (it is actually demodulated _everywhere_ in the
>> beam), and then you again have a frequency-dependent radiation pattern.
>> So yes, some years in the future maybe we have an ultrasonic projector
>> that is actually capable of putting a kick drum right in the middle of
>> the room without frying anything in its path. But as soon as the
>> baseband sound materializes, it will be (almost) omnidirectional again.
>>
>>
>
> Here's an interesting datapoint:
>
> http://www.ultrasonic-audio.com/images/Acouspade_vs_Audio_Spotlight.png
>
> Consider the Acouspade, to the right. The polar pattern is truly nice,
unless you look at the fact that we are not told what happens below 500 Hz
(because very likely, nothing much is happening there), and we take note of
the tiny, tiny dotted line that denotes 4 kHz, which is down by around 18
dB on-axis, indicating that in the treble range, not much is happening
either.
>
> This is a wonderful tool if you want to whisper textual information at
your visitor. But what you are actually perceiving is your amazing ability
to suspend disbelief in the presence of a friendly voice from your own
species.
>
> --
> Jörn Nettingsmeier
> Lortzingstr. 11, 45128 Essen, Tel. +49 177 7937487
>
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Re: [Sursound] Advice on new loudspeaker array... Genelec 8010 speakers?

2015-10-16 Thread Steven Boardman
This is something I have alluded to before.
There is no need to have multiple transducers in the same box with
ambisonics.. In fact it should be more accurate, economical, aesthetic, and
space saving to have each transducer at its own separate point in space.
Tweeters are more directional so more are needed,  they are also cheaper.
Going all the way down the frequency range to the least directional and
most expensive, woofers and subs.
Separate decodes could be done for each transducer bandwidth, rotating the
soundfield to align. This would also benefit the transducer crossover
point, as there would be less interference from proximity. It would also
help room response, as crossovers could be tweaked and balanced on the fly.
Which is also alot of fun!

Steve
On 16 Oct 2015 12:47, "Peter Lennox" <p.len...@derby.ac.uk> wrote:

> we used a much cruder version of this back in 2002 - decoding a
> hemispherical 32 speaker array to second order, but crossed over the
> B-format at 90Hz (I think) to a horizontal-only 8-sub array, decoded in 1st
> order. This was on the basis that we couldn't fly the subs, and anyway,
> elevation discernment, being largely due to pinnae affects, was not
> appealed to by the subs anyway. Had to work on the time alignment (the sub
> decoder was analogue, the mid'n'tops 32 speaker array done in software) and
> spatial alignment (rotating the subfield to match t'other, in the b-format
> feed). It worked well, though could have been further refined; it was a
> one-off installation.
> But the principle of using decreasing order with decreasing frequency made
> sense from the point of view of efficient use of transducers.
>
> It made me wonder whether the same principle extends the other way -
> increasing order with increasing frequency, to make up for the deficiencies
> in spatial resolution of lower orders at HF.
> Given that it should now be reasonably 'easy' to align the fields of
> multiple cells - even having differnt numbers of speakers for each
> frequency band, there might be less reason to assume that  point source
> speakers are strictly necessary.
> We're still using speakers designed as stereo projection systems, and it
> could even be that starting again, thinking about real-world usages of
> ambisonics, that one could revisit the speaker design theories.
>
> Going off on a tangent, it might be that (as others have experimented
> with, before) that the trasnducer design for the programme material which
> is 'ambient' (reflected sound, from no particular source, and therefor not
> requiring precision in phantom imagery) might differ than that for
> the'virtual sources' ('images')
>
> So I experimented with 12 very modest nxt-type flat panels which were
> rotated thru' 90 deg. to what you'd expect, as it were - that is, they
> didn't 'face' the centre but were at right angles to it. The results (given
> the modest set up) were better than they had any right to be - most
> especially for ambient and distant sounds.
> I know they used to use multiple dipoles on the walls in cinemas for
> conveying the surround channels of 5.1 material (they might still do, I
> never go to the cinema because of the loud, poor sound) - so this seems to
> be a similar principle.
>
> Just a few ramblings
> cheers
> Dr. Peter Lennox
> Senior Fellow of the Higher Education Academy
> Senior Lecturer in Perception
> College of Arts
> University of Derby
>
> Tel: 01332 593155
> 
> From: Sursound [sursound-boun...@music.vt.edu] On Behalf Of Jörn
> Nettingsmeier [netti...@stackingdwarves.net]
> Sent: 16 October 2015 12:15
> To: sursound@music.vt.edu
> Subject: Re: [Sursound] Advice on new loudspeaker array... Genelec 8010
> speakers?
>
> On 10/15/2015 10:51 PM, Dave Malham wrote:
> > One of the things that should be investigated in conjunction with higher
> > order Ambisonics material would be to "fade down" the higher order
> > components as the frequency drops, thus spreading the bass over more
> > speakers, reducing the strain on the individual speakers whilst
> maintaining
> > the spectral balance - hey, wasn't that Richard Lee's Powered Integrated
> > Sub concept from several years ago?? Doesn't help with first order
> materiel
> > but
> >
>
> 
>
> Intriguing idea, that. So we would apply zero-phase high-pass filters to
> the second and higher components?
> Should be nice for a test run, but how to keep latency down for live
> electronics and A/V sync? How would we phase-align an IIR filter?
> Allpasses on the lower components?
>
> The spectral balance would be maintained despite the filters, since
> we're in LF, where each new order "takes away" as much as i

Re: [Sursound] Advice on new loudspeaker array... Genelec 8010 speakers?

2015-10-16 Thread Peter Lennox
plus, with the large numbers of speakers, it's cheaper and easier to cross over 
in the b-format 'pinchpoint' than in the speaker feeds.
ppl

Dr. Peter Lennox
Senior Fellow of the Higher Education Academy
Senior Lecturer in Perception
College of Arts
University of Derby

Tel: 01332 593155

From: Sursound [sursound-boun...@music.vt.edu] On Behalf Of Steven Boardman 
[boardroomout...@gmail.com]
Sent: 16 October 2015 14:14
To: Surround Sound discussion group
Subject: Re: [Sursound] Advice on new loudspeaker array... Genelec 8010 
speakers?

This is something I have alluded to before.
There is no need to have multiple transducers in the same box with
ambisonics.. In fact it should be more accurate, economical, aesthetic, and
space saving to have each transducer at its own separate point in space.
Tweeters are more directional so more are needed,  they are also cheaper.
Going all the way down the frequency range to the least directional and
most expensive, woofers and subs.
Separate decodes could be done for each transducer bandwidth, rotating the
soundfield to align. This would also benefit the transducer crossover
point, as there would be less interference from proximity. It would also
help room response, as crossovers could be tweaked and balanced on the fly.
Which is also alot of fun!

Steve
On 16 Oct 2015 12:47, "Peter Lennox" <p.len...@derby.ac.uk> wrote:

> we used a much cruder version of this back in 2002 - decoding a
> hemispherical 32 speaker array to second order, but crossed over the
> B-format at 90Hz (I think) to a horizontal-only 8-sub array, decoded in 1st
> order. This was on the basis that we couldn't fly the subs, and anyway,
> elevation discernment, being largely due to pinnae affects, was not
> appealed to by the subs anyway. Had to work on the time alignment (the sub
> decoder was analogue, the mid'n'tops 32 speaker array done in software) and
> spatial alignment (rotating the subfield to match t'other, in the b-format
> feed). It worked well, though could have been further refined; it was a
> one-off installation.
> But the principle of using decreasing order with decreasing frequency made
> sense from the point of view of efficient use of transducers.
>
> It made me wonder whether the same principle extends the other way -
> increasing order with increasing frequency, to make up for the deficiencies
> in spatial resolution of lower orders at HF.
> Given that it should now be reasonably 'easy' to align the fields of
> multiple cells - even having differnt numbers of speakers for each
> frequency band, there might be less reason to assume that  point source
> speakers are strictly necessary.
> We're still using speakers designed as stereo projection systems, and it
> could even be that starting again, thinking about real-world usages of
> ambisonics, that one could revisit the speaker design theories.
>
> Going off on a tangent, it might be that (as others have experimented
> with, before) that the trasnducer design for the programme material which
> is 'ambient' (reflected sound, from no particular source, and therefor not
> requiring precision in phantom imagery) might differ than that for
> the'virtual sources' ('images')
>
> So I experimented with 12 very modest nxt-type flat panels which were
> rotated thru' 90 deg. to what you'd expect, as it were - that is, they
> didn't 'face' the centre but were at right angles to it. The results (given
> the modest set up) were better than they had any right to be - most
> especially for ambient and distant sounds.
> I know they used to use multiple dipoles on the walls in cinemas for
> conveying the surround channels of 5.1 material (they might still do, I
> never go to the cinema because of the loud, poor sound) - so this seems to
> be a similar principle.
>
> Just a few ramblings
> cheers
> Dr. Peter Lennox
> Senior Fellow of the Higher Education Academy
> Senior Lecturer in Perception
> College of Arts
> University of Derby
>
> Tel: 01332 593155
> 
> From: Sursound [sursound-boun...@music.vt.edu] On Behalf Of Jörn
> Nettingsmeier [netti...@stackingdwarves.net]
> Sent: 16 October 2015 12:15
> To: sursound@music.vt.edu
> Subject: Re: [Sursound] Advice on new loudspeaker array... Genelec 8010
> speakers?
>
> On 10/15/2015 10:51 PM, Dave Malham wrote:
> > One of the things that should be investigated in conjunction with higher
> > order Ambisonics material would be to "fade down" the higher order
> > components as the frequency drops, thus spreading the bass over more
> > speakers, reducing the strain on the individual speakers whilst
> maintaining
> > the spectral balance - hey, wasn't that Richard Lee's Powered Integrated
> > 

Re: [Sursound] Advice on new loudspeaker array... Genelec 8010 speakers?

2015-10-16 Thread David McGriffy
I've been thinking about how this discussion might apply to a couple of
things I'm working on and it seems to me there are two different problems
here.

First, there is the issue of higher order mics often not really being
higher order at low frequencies.  But isn't this really a problem of
encoding and not decoding?  It seems like we shouldn't have to know
anything about the mic once we are in B-format.  And such considerations
would not apply to synthetically panned higher order signals, right?

The other issues around cost of low frequency drivers, the ability to place
the physically larger, heavier speakers, dispersion patterns of different
drivers, etc. are certainly decoder questions.  With simple, linear
decoders, one would have an 'ambisonic crossover' that not only divides
frequency bands but takes care of scaling the different order components,
followed by two or more decoders.  Since a parametric decoder is already
working in the frequency domain, one could just vary the decode parameters
on a bin by bin basis, thus generating all the outputs from a single set of
input FFT's.

But these issues are about really decoding to speakers, which would not
apply to creating say 7.1 stems to be later mixed and sent to a bass
managed theater system, right?  Or to put it another way, crossed over
decoders are doing the bass management in the ambisonic domain.

David
VVAudio

On Fri, Oct 16, 2015 at 8:19 AM, Peter Lennox <p.len...@derby.ac.uk> wrote:

> plus, with the large numbers of speakers, it's cheaper and easier to cross
> over in the b-format 'pinchpoint' than in the speaker feeds.
> ppl
>
> Dr. Peter Lennox
> Senior Fellow of the Higher Education Academy
> Senior Lecturer in Perception
> College of Arts
> University of Derby
>
> Tel: 01332 593155
> 
> From: Sursound [sursound-boun...@music.vt.edu] On Behalf Of Steven
> Boardman [boardroomout...@gmail.com]
> Sent: 16 October 2015 14:14
> To: Surround Sound discussion group
> Subject: Re: [Sursound] Advice on new loudspeaker array... Genelec 8010
> speakers?
>
> This is something I have alluded to before.
> There is no need to have multiple transducers in the same box with
> ambisonics.. In fact it should be more accurate, economical, aesthetic, and
> space saving to have each transducer at its own separate point in space.
> Tweeters are more directional so more are needed,  they are also cheaper.
> Going all the way down the frequency range to the least directional and
> most expensive, woofers and subs.
> Separate decodes could be done for each transducer bandwidth, rotating the
> soundfield to align. This would also benefit the transducer crossover
> point, as there would be less interference from proximity. It would also
> help room response, as crossovers could be tweaked and balanced on the fly.
> Which is also alot of fun!
>
> Steve
> On 16 Oct 2015 12:47, "Peter Lennox" <p.len...@derby.ac.uk> wrote:
>
> > we used a much cruder version of this back in 2002 - decoding a
> > hemispherical 32 speaker array to second order, but crossed over the
> > B-format at 90Hz (I think) to a horizontal-only 8-sub array, decoded in
> 1st
> > order. This was on the basis that we couldn't fly the subs, and anyway,
> > elevation discernment, being largely due to pinnae affects, was not
> > appealed to by the subs anyway. Had to work on the time alignment (the
> sub
> > decoder was analogue, the mid'n'tops 32 speaker array done in software)
> and
> > spatial alignment (rotating the subfield to match t'other, in the
> b-format
> > feed). It worked well, though could have been further refined; it was a
> > one-off installation.
> > But the principle of using decreasing order with decreasing frequency
> made
> > sense from the point of view of efficient use of transducers.
> >
> > It made me wonder whether the same principle extends the other way -
> > increasing order with increasing frequency, to make up for the
> deficiencies
> > in spatial resolution of lower orders at HF.
> > Given that it should now be reasonably 'easy' to align the fields of
> > multiple cells - even having differnt numbers of speakers for each
> > frequency band, there might be less reason to assume that  point source
> > speakers are strictly necessary.
> > We're still using speakers designed as stereo projection systems, and it
> > could even be that starting again, thinking about real-world usages of
> > ambisonics, that one could revisit the speaker design theories.
> >
> > Going off on a tangent, it might be that (as others have experimented
> > with, before) that the trasnducer design for the programme material which
> > is 'ambient' 

Re: [Sursound] Advice on new loudspeaker array... Genelec 8010 speakers?

2015-10-15 Thread Dave Malham
 When I was caught out by this problem the level of info described in
Sebastian's post wasn't in the manuals so I hadn't thought about it - tho'
I *should *have done, given the fact that I designed one for a magazine
some 4 decades ago :-(

Dave

On 15 October 2015 at 10:31, Sebastian Gabler 
wrote:

> That's specifically true for the 8010s. Their max SPL @ 1 m is app. 105 dB
> per pair, but the long term SPL is only 91 dB, expressly stated that it is
> because of the protection circuit in the manual.
> That being said, with 32 speakers, the SPL is 4 time higher than for 2.
> That's far beyond comfort zone for any listener for the specified values.
>
> Sebastian
>
> Am 15.10.2015 um 10:38 schrieb Dave Malham:
>
>> One thing I would be careful of on small, active speakers is the
>> protection
>> circuits. Sophisticated protection circuits thermally model (or even
>> sense)
>> the drivers and reduce the gain if one of them is getting near the limits.
>> This can cause weird, signal dependent, image distortions when one of the
>> speakers is driven harder and drops in gain (usually in the bass). Because
>> the speaker doesn't just switch off, which you would hear, but simply goes
>> a bit quieter, in an Ambisonic array of, say, 16 speakers, this doesn't
>> shout out at you but just subtly distorts the image. Can be a really
>> annoying and difficult to diagnose problem, especially when you haven't
>> heard it before (been there, done that, got the T-shirt). With passive
>> speakers, this doesn't happen - you just get the rattle from the cone
>> hitting the endstops or the scrape of the melted voice coil against the
>> sides of the air gap but at least the first of these warns you when you
>> are
>> near to damaging the speakers. Note that with small active speakers in
>> particular, getting to 'normal' monitoring levels gets you right into the
>> zone where the protection will keep cutting in and out :-(
>>
>> Dave
>>
>>
>> On 14 October 2015 at 18:20, Charles Veasey 
>> wrote:
>>
>> Hello,
>>>
>>> We're upgrading our current 15.2 (Behringer) loudspeaker array. I'd like
>>> to
>>> get more spatial resolution and higher quality speakers. Right now I'm
>>> thinking about (32) Genelec 8010 and (2) Genelec 7050B subs.
>>>
>>> However, I have some concerns about the Genelec 8010s selling at only
>>> $350.
>>>
>>> Does anyone have experience with these speakers, or have advice for my
>>> situation?
>>>
>>> thanks,
>>> Charles
>>> -- next part --
>>> An HTML attachment was scrubbed...
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>>>
>>> https://mail.music.vt.edu/mailman/private/sursound/attachments/20151014/902db591/attachment.html
>>> ___
>>> Sursound mailing list
>>> Sursound@music.vt.edu
>>> https://mail.music.vt.edu/mailman/listinfo/sursound - unsubscribe here,
>>> edit account or options, view archives and so on.
>>>
>>>
>>
>>
> ___
> Sursound mailing list
> Sursound@music.vt.edu
> https://mail.music.vt.edu/mailman/listinfo/sursound - unsubscribe here,
> edit account or options, view archives and so on.
>



-- 

As of 1st October 2012, I have retired from the University.

These are my own views and may or may not be shared by the University

Dave Malham
Honorary Fellow, Department of Music
The University of York
York YO10 5DD
UK

'Ambisonics - Component Imaging for Audio'
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Re: [Sursound] Advice on new loudspeaker array... Genelec 8010 speakers?

2015-10-15 Thread Ilpo Martikainen
The protection circuits likely trip the tweeter first, as its thermal time 
constant is much shorter than that of woofer. Also the thermal power handling 
of the woofer is much higher. Normally there is an indicator turning red if the 
limits are exceeded and protection is activated. Without protection people keep 
replacing tweeters.


Ilpo





On 15.10.2015 11:38, "Sursound on behalf of Dave Malham" 
 wrote:

>One thing I would be careful of on small, active speakers is the protection
>circuits. Sophisticated protection circuits thermally model (or even sense)
>the drivers and reduce the gain if one of them is getting near the limits.
>This can cause weird, signal dependent, image distortions when one of the
>speakers is driven harder and drops in gain (usually in the bass). Because
>the speaker doesn't just switch off, which you would hear, but simply goes
>a bit quieter, in an Ambisonic array of, say, 16 speakers, this doesn't
>shout out at you but just subtly distorts the image. Can be a really
>annoying and difficult to diagnose problem, especially when you haven't
>heard it before (been there, done that, got the T-shirt). With passive
>speakers, this doesn't happen - you just get the rattle from the cone
>hitting the endstops or the scrape of the melted voice coil against the
>sides of the air gap but at least the first of these warns you when you are
>near to damaging the speakers. Note that with small active speakers in
>particular, getting to 'normal' monitoring levels gets you right into the
>zone where the protection will keep cutting in and out :-(
>
>   Dave
>
>
>On 14 October 2015 at 18:20, Charles Veasey 
>wrote:
>
>> Hello,
>>
>> We're upgrading our current 15.2 (Behringer) loudspeaker array. I'd like to
>> get more spatial resolution and higher quality speakers. Right now I'm
>> thinking about (32) Genelec 8010 and (2) Genelec 7050B subs.
>>
>> However, I have some concerns about the Genelec 8010s selling at only $350.
>>
>> Does anyone have experience with these speakers, or have advice for my
>> situation?
>>
>> thanks,
>> Charles
>> -- next part --
>> An HTML attachment was scrubbed...
>> URL: <
>> https://mail.music.vt.edu/mailman/private/sursound/attachments/20151014/902db591/attachment.html
>> >
>> ___
>> Sursound mailing list
>> Sursound@music.vt.edu
>> https://mail.music.vt.edu/mailman/listinfo/sursound - unsubscribe here,
>> edit account or options, view archives and so on.
>>
>
>
>
>-- 
>
>As of 1st October 2012, I have retired from the University.
>
>These are my own views and may or may not be shared by the University
>
>Dave Malham
>Honorary Fellow, Department of Music
>The University of York
>York YO10 5DD
>UK
>
>'Ambisonics - Component Imaging for Audio'
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Re: [Sursound] Advice on new loudspeaker array... Genelec 8010 speakers?

2015-10-15 Thread Steven Boardman
I am currently replacing my 32 passive speaker array with genelec 6010s.
These are a cheaper alternative, that are still in stock in a lot of
places. They have exactly the same spec, but unbalanced connections. Which
won't be a problem for small runs. The spl will be fine for a smaller room
like  mine. It is 3m x 3m. If the protection is a problem roll the
crossover higher and get more subs. I currently have 4, but if bass
directionality suffers with a higher crossover, I will increase the number
and put some higher.

Good luck

Steve
On 15 Oct 2015 10:32, "Sebastian Gabler"  wrote:

> That's specifically true for the 8010s. Their max SPL @ 1 m is app. 105 dB
> per pair, but the long term SPL is only 91 dB, expressly stated that it is
> because of the protection circuit in the manual.
> That being said, with 32 speakers, the SPL is 4 time higher than for 2.
> That's far beyond comfort zone for any listener for the specified values.
>
> Sebastian
>
> Am 15.10.2015 um 10:38 schrieb Dave Malham:
>
>> One thing I would be careful of on small, active speakers is the
>> protection
>> circuits. Sophisticated protection circuits thermally model (or even
>> sense)
>> the drivers and reduce the gain if one of them is getting near the limits.
>> This can cause weird, signal dependent, image distortions when one of the
>> speakers is driven harder and drops in gain (usually in the bass). Because
>> the speaker doesn't just switch off, which you would hear, but simply goes
>> a bit quieter, in an Ambisonic array of, say, 16 speakers, this doesn't
>> shout out at you but just subtly distorts the image. Can be a really
>> annoying and difficult to diagnose problem, especially when you haven't
>> heard it before (been there, done that, got the T-shirt). With passive
>> speakers, this doesn't happen - you just get the rattle from the cone
>> hitting the endstops or the scrape of the melted voice coil against the
>> sides of the air gap but at least the first of these warns you when you
>> are
>> near to damaging the speakers. Note that with small active speakers in
>> particular, getting to 'normal' monitoring levels gets you right into the
>> zone where the protection will keep cutting in and out :-(
>>
>> Dave
>>
>>
>> On 14 October 2015 at 18:20, Charles Veasey 
>> wrote:
>>
>> Hello,
>>>
>>> We're upgrading our current 15.2 (Behringer) loudspeaker array. I'd like
>>> to
>>> get more spatial resolution and higher quality speakers. Right now I'm
>>> thinking about (32) Genelec 8010 and (2) Genelec 7050B subs.
>>>
>>> However, I have some concerns about the Genelec 8010s selling at only
>>> $350.
>>>
>>> Does anyone have experience with these speakers, or have advice for my
>>> situation?
>>>
>>> thanks,
>>> Charles
>>> -- next part --
>>> An HTML attachment was scrubbed...
>>> URL: <
>>>
>>> https://mail.music.vt.edu/mailman/private/sursound/attachments/20151014/902db591/attachment.html
>>> ___
>>> Sursound mailing list
>>> Sursound@music.vt.edu
>>> https://mail.music.vt.edu/mailman/listinfo/sursound - unsubscribe here,
>>> edit account or options, view archives and so on.
>>>
>>>
>>
>>
> ___
> Sursound mailing list
> Sursound@music.vt.edu
> https://mail.music.vt.edu/mailman/listinfo/sursound - unsubscribe here,
> edit account or options, view archives and so on.
>
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Re: [Sursound] Advice on new loudspeaker array... Genelec 8010 speakers?

2015-10-15 Thread Augustine Leudar
32 speakers in a 3m * 3m space ? Wow - I'd love to see some pictures if you
get a chance !

On 15 October 2015 at 11:21, Steven Boardman 
wrote:

> I am currently replacing my 32 passive speaker array with genelec 6010s.
> These are a cheaper alternative, that are still in stock in a lot of
> places. They have exactly the same spec, but unbalanced connections. Which
> won't be a problem for small runs. The spl will be fine for a smaller room
> like  mine. It is 3m x 3m. If the protection is a problem roll the
> crossover higher and get more subs. I currently have 4, but if bass
> directionality suffers with a higher crossover, I will increase the number
> and put some higher.
>
> Good luck
>
> Steve
> On 15 Oct 2015 10:32, "Sebastian Gabler"  wrote:
>
> > That's specifically true for the 8010s. Their max SPL @ 1 m is app. 105
> dB
> > per pair, but the long term SPL is only 91 dB, expressly stated that it
> is
> > because of the protection circuit in the manual.
> > That being said, with 32 speakers, the SPL is 4 time higher than for 2.
> > That's far beyond comfort zone for any listener for the specified values.
> >
> > Sebastian
> >
> > Am 15.10.2015 um 10:38 schrieb Dave Malham:
> >
> >> One thing I would be careful of on small, active speakers is the
> >> protection
> >> circuits. Sophisticated protection circuits thermally model (or even
> >> sense)
> >> the drivers and reduce the gain if one of them is getting near the
> limits.
> >> This can cause weird, signal dependent, image distortions when one of
> the
> >> speakers is driven harder and drops in gain (usually in the bass).
> Because
> >> the speaker doesn't just switch off, which you would hear, but simply
> goes
> >> a bit quieter, in an Ambisonic array of, say, 16 speakers, this doesn't
> >> shout out at you but just subtly distorts the image. Can be a really
> >> annoying and difficult to diagnose problem, especially when you haven't
> >> heard it before (been there, done that, got the T-shirt). With passive
> >> speakers, this doesn't happen - you just get the rattle from the cone
> >> hitting the endstops or the scrape of the melted voice coil against the
> >> sides of the air gap but at least the first of these warns you when you
> >> are
> >> near to damaging the speakers. Note that with small active speakers in
> >> particular, getting to 'normal' monitoring levels gets you right into
> the
> >> zone where the protection will keep cutting in and out :-(
> >>
> >> Dave
> >>
> >>
> >> On 14 October 2015 at 18:20, Charles Veasey 
> >> wrote:
> >>
> >> Hello,
> >>>
> >>> We're upgrading our current 15.2 (Behringer) loudspeaker array. I'd
> like
> >>> to
> >>> get more spatial resolution and higher quality speakers. Right now I'm
> >>> thinking about (32) Genelec 8010 and (2) Genelec 7050B subs.
> >>>
> >>> However, I have some concerns about the Genelec 8010s selling at only
> >>> $350.
> >>>
> >>> Does anyone have experience with these speakers, or have advice for my
> >>> situation?
> >>>
> >>> thanks,
> >>> Charles
> >>> -- next part --
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> >>>
> >>>
> >>
> >>
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Re: [Sursound] Advice on new loudspeaker array... Genelec 8010 speakers?

2015-10-15 Thread Marc Lavallée
On Thu, 15 Oct 2015 07:08:29 +0200, David Pickett wrote :
> At 23:17 14-10-15, Augustine Leudar wrote:
> 
>  >Yeah actually the lsr308 and lsr305 have been getting rave reviews
>  >and cost very little their waveguide gives wide dispersal (good off
>  >axis response) which is probably good for spatial audio.
> 
> Good off axis response, i.e. uncoloured response, is presumably a 
> good thing.  But, intuitively, I should have thought that the more 
> playback channels you have, the less desirable any off axis response 
> would be.  Is this not so?
> 
> David

I also think that when an ambisonic array is composed of pairs of facing
loudspeakers, each pair is trying to reconstruct a directional wave. So
loudspeakers with more directivity would be better. I may be wrong, so
please comment!
--
Marc
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Re: [Sursound] Advice on new loudspeaker array... Genelec 8010 speakers?

2015-10-15 Thread Augustine Leudar
Possibly ambisonics is different - but not all multichannel audio uses
ambisonics - certainly with vbap for example  if your speakers are wide
apart you don't want a big gap when panning between them then  wider
dispersal would be advantageous if the speakers are very close together I
could see it would introduce coloration when the directivity of the
speakers overlapped - with wavefield synthesis the smaller the gaps between
speaker cones the higher frequencies can be succesfully spatialised - so I
guess for wfs more "pinpoint" directivty would be preferred - I may also be
wrong ! For creating true walk around 3d soundscapes with no sweet spot for
me a useful tool would be a driver which would be a sphere which put out
sounds in all directions (360) - because thats how sound often propogates
in real space (eg a twig cracking up a tree will not just put out sound in
the 180/90 degree space on one side) The dispersal pattern of speakers isnt
often considered when building these kind of systems so its an interesting
topic !

On 15 October 2015 at 13:24, Marc Lavallée  wrote:

> On Thu, 15 Oct 2015 07:08:29 +0200, David Pickett wrote :
> > At 23:17 14-10-15, Augustine Leudar wrote:
> >
> >  >Yeah actually the lsr308 and lsr305 have been getting rave reviews
> >  >and cost very little their waveguide gives wide dispersal (good off
> >  >axis response) which is probably good for spatial audio.
> >
> > Good off axis response, i.e. uncoloured response, is presumably a
> > good thing.  But, intuitively, I should have thought that the more
> > playback channels you have, the less desirable any off axis response
> > would be.  Is this not so?
> >
> > David
>
> I also think that when an ambisonic array is composed of pairs of facing
> loudspeakers, each pair is trying to reconstruct a directional wave. So
> loudspeakers with more directivity would be better. I may be wrong, so
> please comment!
> --
> Marc
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Re: [Sursound] Advice on new loudspeaker array... Genelec 8010 speakers?

2015-10-15 Thread Sebastian Gabler

Am 15.10.2015 um 07:08 schrieb David Pickett:

At 23:17 14-10-15, Augustine Leudar wrote:

>Yeah actually the lsr308 and lsr305 have been getting rave reviews 
and cost
>very little their waveguide gives wide dispersal (good off axis 
response)

>which is probably good for spatial audio.

Good off axis response, i.e. uncoloured response, is presumably a good 
thing.  But, intuitively, I should have thought that the more playback 
channels you have, the less desirable any off axis response would be.  
Is this not so?


David

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I think the more channels you have, the more critical becomes coloured 
off-axis response.  Anything that very faintly behaves like a point 
source will produce off-axis distribution.


Sebastian
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Re: [Sursound] Advice on new loudspeaker array... Genelec 8010 speakers?

2015-10-15 Thread Sebastian Gabler
That's specifically true for the 8010s. Their max SPL @ 1 m is app. 105 
dB per pair, but the long term SPL is only 91 dB, expressly stated that 
it is because of the protection circuit in the manual.
That being said, with 32 speakers, the SPL is 4 time higher than for 2. 
That's far beyond comfort zone for any listener for the specified values.


Sebastian

Am 15.10.2015 um 10:38 schrieb Dave Malham:

One thing I would be careful of on small, active speakers is the protection
circuits. Sophisticated protection circuits thermally model (or even sense)
the drivers and reduce the gain if one of them is getting near the limits.
This can cause weird, signal dependent, image distortions when one of the
speakers is driven harder and drops in gain (usually in the bass). Because
the speaker doesn't just switch off, which you would hear, but simply goes
a bit quieter, in an Ambisonic array of, say, 16 speakers, this doesn't
shout out at you but just subtly distorts the image. Can be a really
annoying and difficult to diagnose problem, especially when you haven't
heard it before (been there, done that, got the T-shirt). With passive
speakers, this doesn't happen - you just get the rattle from the cone
hitting the endstops or the scrape of the melted voice coil against the
sides of the air gap but at least the first of these warns you when you are
near to damaging the speakers. Note that with small active speakers in
particular, getting to 'normal' monitoring levels gets you right into the
zone where the protection will keep cutting in and out :-(

Dave


On 14 October 2015 at 18:20, Charles Veasey 
wrote:


Hello,

We're upgrading our current 15.2 (Behringer) loudspeaker array. I'd like to
get more spatial resolution and higher quality speakers. Right now I'm
thinking about (32) Genelec 8010 and (2) Genelec 7050B subs.

However, I have some concerns about the Genelec 8010s selling at only $350.

Does anyone have experience with these speakers, or have advice for my
situation?

thanks,
Charles
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Re: [Sursound] Advice on new loudspeaker array... Genelec 8010 speakers?

2015-10-15 Thread Augustine Leudar
I was wondering about that as I wrote it actually - Sometimes when I have a
large space between speakers I increas the directivity (using ICST) to fill
in holes between speakers when panning - but this is really just spreading
the sound ove rmore speakers rather than relating to the dispersal of an
individual speaker. So in temrs of the disersal of an individual speaker -
pinpoint or wide dispersal - I guess it depends on how far apart your
speakers are ?

On 15 October 2015 at 06:08, David Pickett  wrote:

> At 23:17 14-10-15, Augustine Leudar wrote:
>
> >Yeah actually the lsr308 and lsr305 have been getting rave reviews and
> cost
> >very little their waveguide gives wide dispersal (good off axis response)
> >which is probably good for spatial audio.
>
> Good off axis response, i.e. uncoloured response, is presumably a good
> thing.  But, intuitively, I should have thought that the more playback
> channels you have, the less desirable any off axis response would be.  Is
> this not so?
>
> David
>
>
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Re: [Sursound] Advice on new loudspeaker array... Genelec 8010 speakers?

2015-10-15 Thread Dave Malham
One thing I would be careful of on small, active speakers is the protection
circuits. Sophisticated protection circuits thermally model (or even sense)
the drivers and reduce the gain if one of them is getting near the limits.
This can cause weird, signal dependent, image distortions when one of the
speakers is driven harder and drops in gain (usually in the bass). Because
the speaker doesn't just switch off, which you would hear, but simply goes
a bit quieter, in an Ambisonic array of, say, 16 speakers, this doesn't
shout out at you but just subtly distorts the image. Can be a really
annoying and difficult to diagnose problem, especially when you haven't
heard it before (been there, done that, got the T-shirt). With passive
speakers, this doesn't happen - you just get the rattle from the cone
hitting the endstops or the scrape of the melted voice coil against the
sides of the air gap but at least the first of these warns you when you are
near to damaging the speakers. Note that with small active speakers in
particular, getting to 'normal' monitoring levels gets you right into the
zone where the protection will keep cutting in and out :-(

   Dave


On 14 October 2015 at 18:20, Charles Veasey 
wrote:

> Hello,
>
> We're upgrading our current 15.2 (Behringer) loudspeaker array. I'd like to
> get more spatial resolution and higher quality speakers. Right now I'm
> thinking about (32) Genelec 8010 and (2) Genelec 7050B subs.
>
> However, I have some concerns about the Genelec 8010s selling at only $350.
>
> Does anyone have experience with these speakers, or have advice for my
> situation?
>
> thanks,
> Charles
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-- 

As of 1st October 2012, I have retired from the University.

These are my own views and may or may not be shared by the University

Dave Malham
Honorary Fellow, Department of Music
The University of York
York YO10 5DD
UK

'Ambisonics - Component Imaging for Audio'
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Re: [Sursound] Advice on new loudspeaker array... Genelec 8010 speakers?

2015-10-15 Thread Jörn Nettingsmeier

On 10/15/2015 11:31 AM, Sebastian Gabler wrote:

That's specifically true for the 8010s. Their max SPL @ 1 m is app. 105
dB per pair, but the long term SPL is only 91 dB, expressly stated that
it is because of the protection circuit in the manual.
That being said, with 32 speakers, the SPL is 4 time higher than for 2.
That's far beyond comfort zone for any listener for the specified values.


Careful there. No program material ever uses all speakers for the oomph 
passages. Usually it's a very sharply located source that shouts out at 
you, which basically means every single speaker has to be able to 
deliver that oomph, single-handedly. Curse of multichannel. Content 
doesn't scale :(


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Re: [Sursound] Advice on new loudspeaker array... Genelec 8010 speakers?

2015-10-15 Thread Augustine Leudar
Yes Jorn - what I mean wide dispersal of a spectrally balanced off axis
response - ie the frequency response doesn't alter radically when you move
up, down, left , right - so to clarify wide dispersal of all frequencies
not just bass

On 15 October 2015 at 14:14, Jörn Nettingsmeier <
netti...@stackingdwarves.net> wrote:

> On 10/15/2015 02:35 PM, Augustine Leudar wrote:
>
>> Possibly ambisonics is different - but not all multichannel audio uses
>> ambisonics - certainly with vbap for example  if your speakers are wide
>> apart you don't want a big gap when panning between them then  wider
>> dispersal would be advantageous if the speakers are very close together I
>> could see it would introduce coloration when the directivity of the
>> speakers overlapped - with wavefield synthesis the smaller the gaps
>> between
>> speaker cones the higher frequencies can be succesfully spatialised - so I
>> guess for wfs more "pinpoint" directivty would be preferred - I may also
>> be
>> wrong ! For creating true walk around 3d soundscapes with no sweet spot
>> for
>> me a useful tool would be a driver which would be a sphere which put out
>> sounds in all directions (360) - because thats how sound often propogates
>> in real space (eg a twig cracking up a tree will not just put out sound in
>> the 180/90 degree space on one side) The dispersal pattern of speakers
>> isnt
>> often considered when building these kind of systems so its an interesting
>> topic !
>>
>
>
> Speakers with "narrow dispersal patterns" do not exist. All speakers are
> near-omni in the bass. What a narrow pattern gives you is a longer throw of
> the HF, which can be useful in traditional sound reinforcement.
>
> But in massive multichannel environments, overly directional speakers will
> add up to a muddy, bass-heavy diffuse field. I'd always go for as wide a
> coverage angle as possible, unless I have to deal with a really huge space.
> Since you can't avoid off-axis sound, at least make it spectrally balanced.
>
>
>
>
>
> --
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> Lortzingstr. 11, 45128 Essen, Tel. +49 177 7937487
>
> Meister für Veranstaltungstechnik (Bühne/Studio)
> Tonmeister VDT
>
> http://stackingdwarves.net
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Re: [Sursound] Advice on new loudspeaker array... Genelec 8010 speakers?

2015-10-15 Thread Jörn Nettingsmeier

On 10/15/2015 03:30 PM, Augustine Leudar wrote:

I admit there use of the word "ultrasound" is ridiculous - but they do work

On 15 October 2015 at 14:27, Augustine Leudar 
wrote:


Here you go Jorn - a speaker with a narrow dispersion pattern - (they call
it parametric or sound lazer) :

http://www.soundlazer.com/what-is-a-parametric-speaker/


Hmmm. That website completely fails to amaze me.  ;)
Show me your polar pattern (per frequency), show me your amplitude 
response, let me look at the phase, then we talk.


Their selling point on page one seems to be "works great in advertising" :-D

Not to say this thing can't be amazing fun to play with. But I'm not 
considering it a serious tool unless I can see the specs.


Which will be sobering, unless their other project on kickstarter took 
off as well and they have the PhysicsIsLookingElsewhere™ field working 
by now. ;)



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Re: [Sursound] Advice on new loudspeaker array... Genelec 8010 speakers?

2015-10-15 Thread Jörn Nettingsmeier

On 10/15/2015 03:41 PM, Augustine Leudar wrote:

What can I say Jorn - we have some and they work - not as well as
adverstised obviously but strip away the hype they have something thta mor
eor less does as described -  you'll have to wait a while for those
measurements ;)


For now, the low cutoff frequency would be enough.

Mind you, I'm not saying that these things cannot be great creative 
tools. But I'm a sound engineer. I need to deal with the artistic output 
of other people, in such a way that they are not going to ram the 
speakers down my throat because half of the spectrum is missing. I need 
general-purpose speakers, which on a bad day means ten octaves and 110dB 
peak SPL.


We've seen all those outlandish claims of magical waveguides that are 
just fractions of the wavelength in diameter and yet shape the sound so 
wonderfully that a 20Hz beam will travel all the way to the moon (using 
the revolutionary VacuProof™ technology that will finally bring 
cinema-friendly space battles). The problem is, this waveshaping is not 
physically possible. You can make a plane wave, but unless it's a huge 
plane wave with respect to frequency, the edge dispersion will make it 
fall apart. In the end, it's just a point source with a little dent in 
it. I don't even need to wait for measurements.


Even if you consider ultrasonic systems: at some point, the ultrasound 
has to be demodulated (it is actually demodulated _everywhere_ in the 
beam), and then you again have a frequency-dependent radiation pattern. 
So yes, some years in the future maybe we have an ultrasonic projector 
that is actually capable of putting a kick drum right in the middle of 
the room without frying anything in its path. But as soon as the 
baseband sound materializes, it will be (almost) omnidirectional again.



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Re: [Sursound] Advice on new loudspeaker array... Genelec 8010 speakers?

2015-10-15 Thread Jörn Nettingsmeier

On 10/15/2015 03:59 PM, Jörn Nettingsmeier wrote:

On 10/15/2015 03:41 PM, Augustine Leudar wrote:

What can I say Jorn - we have some and they work - not as well as
adverstised obviously but strip away the hype they have something thta
mor
eor less does as described -  you'll have to wait a while for those
measurements ;)


For now, the low cutoff frequency would be enough.

Mind you, I'm not saying that these things cannot be great creative
tools. But I'm a sound engineer. I need to deal with the artistic output
of other people, in such a way that they are not going to ram the
speakers down my throat because half of the spectrum is missing. I need
general-purpose speakers, which on a bad day means ten octaves and 110dB
peak SPL.

We've seen all those outlandish claims of magical waveguides that are
just fractions of the wavelength in diameter and yet shape the sound so
wonderfully that a 20Hz beam will travel all the way to the moon (using
the revolutionary VacuProof™ technology that will finally bring
cinema-friendly space battles). The problem is, this waveshaping is not
physically possible. You can make a plane wave, but unless it's a huge
plane wave with respect to frequency, the edge dispersion will make it
fall apart. In the end, it's just a point source with a little dent in
it. I don't even need to wait for measurements.

Even if you consider ultrasonic systems: at some point, the ultrasound
has to be demodulated (it is actually demodulated _everywhere_ in the
beam), and then you again have a frequency-dependent radiation pattern.
So yes, some years in the future maybe we have an ultrasonic projector
that is actually capable of putting a kick drum right in the middle of
the room without frying anything in its path. But as soon as the
baseband sound materializes, it will be (almost) omnidirectional again.




Here's an interesting datapoint:

http://www.ultrasonic-audio.com/images/Acouspade_vs_Audio_Spotlight.png

Consider the Acouspade, to the right. The polar pattern is truly nice, 
unless you look at the fact that we are not told what happens below 500 
Hz (because very likely, nothing much is happening there), and we take 
note of the tiny, tiny dotted line that denotes 4 kHz, which is down by 
around 18 dB on-axis, indicating that in the treble range, not much is 
happening either.


This is a wonderful tool if you want to whisper textual information at 
your visitor. But what you are actually perceiving is your amazing 
ability to suspend disbelief in the presence of a friendly voice from 
your own species.


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Re: [Sursound] Advice on new loudspeaker array... Genelec 8010 speakers?

2015-10-15 Thread Steven Boardman
Well it's more like 2.8m by 3..7m with a very high ceiling slope up towards
the back. It's on a platform in the roof of the building. It is also only
31 speakers really, as the one below is under my chair, and is generally
disconnected. Space is one reason why I want to change to smaller speakers.
Along with improving their quality.
I used a 3d graphics program to place all the speakers away from doors and
windows, but still keeping the angles the same. (vertices and faces of a
dodecahedron) They are all fastened to walls and ceiling. The distances
from centre vary of course.
In reality it works very well with no obstructions in the room unless you
are very tall! :-)
I will make some pictures available when the next upgrade is completed.

Best

Steve
On 15 Oct 2015 12:56, "Augustine Leudar"  wrote:

> 32 speakers in a 3m * 3m space ? Wow - I'd love to see some pictures if you
> get a chance !
>
> On 15 October 2015 at 11:21, Steven Boardman 
> wrote:
>
> > I am currently replacing my 32 passive speaker array with genelec 6010s.
> > These are a cheaper alternative, that are still in stock in a lot of
> > places. They have exactly the same spec, but unbalanced connections.
> Which
> > won't be a problem for small runs. The spl will be fine for a smaller
> room
> > like  mine. It is 3m x 3m. If the protection is a problem roll the
> > crossover higher and get more subs. I currently have 4, but if bass
> > directionality suffers with a higher crossover, I will increase the
> number
> > and put some higher.
> >
> > Good luck
> >
> > Steve
> > On 15 Oct 2015 10:32, "Sebastian Gabler" 
> wrote:
> >
> > > That's specifically true for the 8010s. Their max SPL @ 1 m is app. 105
> > dB
> > > per pair, but the long term SPL is only 91 dB, expressly stated that it
> > is
> > > because of the protection circuit in the manual.
> > > That being said, with 32 speakers, the SPL is 4 time higher than for 2.
> > > That's far beyond comfort zone for any listener for the specified
> values.
> > >
> > > Sebastian
> > >
> > > Am 15.10.2015 um 10:38 schrieb Dave Malham:
> > >
> > >> One thing I would be careful of on small, active speakers is the
> > >> protection
> > >> circuits. Sophisticated protection circuits thermally model (or even
> > >> sense)
> > >> the drivers and reduce the gain if one of them is getting near the
> > limits.
> > >> This can cause weird, signal dependent, image distortions when one of
> > the
> > >> speakers is driven harder and drops in gain (usually in the bass).
> > Because
> > >> the speaker doesn't just switch off, which you would hear, but simply
> > goes
> > >> a bit quieter, in an Ambisonic array of, say, 16 speakers, this
> doesn't
> > >> shout out at you but just subtly distorts the image. Can be a really
> > >> annoying and difficult to diagnose problem, especially when you
> haven't
> > >> heard it before (been there, done that, got the T-shirt). With passive
> > >> speakers, this doesn't happen - you just get the rattle from the cone
> > >> hitting the endstops or the scrape of the melted voice coil against
> the
> > >> sides of the air gap but at least the first of these warns you when
> you
> > >> are
> > >> near to damaging the speakers. Note that with small active speakers in
> > >> particular, getting to 'normal' monitoring levels gets you right into
> > the
> > >> zone where the protection will keep cutting in and out :-(
> > >>
> > >> Dave
> > >>
> > >>
> > >> On 14 October 2015 at 18:20, Charles Veasey  >
> > >> wrote:
> > >>
> > >> Hello,
> > >>>
> > >>> We're upgrading our current 15.2 (Behringer) loudspeaker array. I'd
> > like
> > >>> to
> > >>> get more spatial resolution and higher quality speakers. Right now
> I'm
> > >>> thinking about (32) Genelec 8010 and (2) Genelec 7050B subs.
> > >>>
> > >>> However, I have some concerns about the Genelec 8010s selling at only
> > >>> $350.
> > >>>
> > >>> Does anyone have experience with these speakers, or have advice for
> my
> > >>> situation?
> > >>>
> > >>> thanks,
> > >>> Charles
> > >>> -- next part --
> > >>> An HTML attachment was scrubbed...
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> > >>>
> >
> https://mail.music.vt.edu/mailman/private/sursound/attachments/20151014/902db591/attachment.html
> > >>> ___
> > >>> Sursound mailing list
> > >>> Sursound@music.vt.edu
> > >>> https://mail.music.vt.edu/mailman/listinfo/sursound - unsubscribe
> > here,
> > >>> edit account or options, view archives and so on.
> > >>>
> > >>>
> > >>
> > >>
> > > ___
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Re: [Sursound] Advice on new loudspeaker array... Genelec 8010 speakers?

2015-10-15 Thread Augustine Leudar
I admit there use of the word "ultrasound" is ridiculous - but they do work

On 15 October 2015 at 14:27, Augustine Leudar 
wrote:

> Here you go Jorn - a speaker with a narrow dispersion pattern - (they call
> it parametric or sound lazer) :
>
> http://www.soundlazer.com/what-is-a-parametric-speaker/
>
> On 15 October 2015 at 14:14, Jörn Nettingsmeier <
> netti...@stackingdwarves.net> wrote:
>
>> On 10/15/2015 02:35 PM, Augustine Leudar wrote:
>>
>>> Possibly ambisonics is different - but not all multichannel audio uses
>>> ambisonics - certainly with vbap for example  if your speakers are wide
>>> apart you don't want a big gap when panning between them then  wider
>>> dispersal would be advantageous if the speakers are very close together I
>>> could see it would introduce coloration when the directivity of the
>>> speakers overlapped - with wavefield synthesis the smaller the gaps
>>> between
>>> speaker cones the higher frequencies can be succesfully spatialised - so
>>> I
>>> guess for wfs more "pinpoint" directivty would be preferred - I may also
>>> be
>>> wrong ! For creating true walk around 3d soundscapes with no sweet spot
>>> for
>>> me a useful tool would be a driver which would be a sphere which put out
>>> sounds in all directions (360) - because thats how sound often propogates
>>> in real space (eg a twig cracking up a tree will not just put out sound
>>> in
>>> the 180/90 degree space on one side) The dispersal pattern of speakers
>>> isnt
>>> often considered when building these kind of systems so its an
>>> interesting
>>> topic !
>>>
>>
>>
>> Speakers with "narrow dispersal patterns" do not exist. All speakers are
>> near-omni in the bass. What a narrow pattern gives you is a longer throw of
>> the HF, which can be useful in traditional sound reinforcement.
>>
>> But in massive multichannel environments, overly directional speakers
>> will add up to a muddy, bass-heavy diffuse field. I'd always go for as wide
>> a coverage angle as possible, unless I have to deal with a really huge
>> space. Since you can't avoid off-axis sound, at least make it spectrally
>> balanced.
>>
>>
>>
>>
>>
>> --
>> Jörn Nettingsmeier
>> Lortzingstr. 11, 45128 Essen, Tel. +49 177 7937487
>>
>> Meister für Veranstaltungstechnik (Bühne/Studio)
>> Tonmeister VDT
>>
>> http://stackingdwarves.net
>>
>> ___
>> Sursound mailing list
>> Sursound@music.vt.edu
>> https://mail.music.vt.edu/mailman/listinfo/sursound - unsubscribe here,
>> edit account or options, view archives and so on.
>>
>
>
>
> --
> www.augustineleudar.com
>



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Re: [Sursound] Advice on new loudspeaker array... Genelec 8010 speakers?

2015-10-15 Thread Pierre Alexandre Tremblay
I think that what Jorn is saying is that a lot of small speakers is not 
good/powerful enough to provide a proper, powerful, dynamic, full range point 
in the space, which is still a very popular gesture in most panning methods.


Le 15 oct. 2015 à 14:24, Augustine Leudar  a écrit :

> Not necessarilly true Jorn - we've had a few pieces at Sarc where all
> speakers went oomph at the same time - painful
> 
> On 15 October 2015 at 14:14, Jörn Nettingsmeier <
> netti...@stackingdwarves.net> wrote:
> 
>> On 10/15/2015 11:31 AM, Sebastian Gabler wrote:
>> 
>>> That's specifically true for the 8010s. Their max SPL @ 1 m is app. 105
>>> dB per pair, but the long term SPL is only 91 dB, expressly stated that
>>> it is because of the protection circuit in the manual.
>>> That being said, with 32 speakers, the SPL is 4 time higher than for 2.
>>> That's far beyond comfort zone for any listener for the specified values.
>>> 
>> 
>> Careful there. No program material ever uses all speakers for the oomph
>> passages. Usually it's a very sharply located source that shouts out at
>> you, which basically means every single speaker has to be able to deliver
>> that oomph, single-handedly. Curse of multichannel. Content doesn't scale :(
>> 
>> --
>> Jörn Nettingsmeier
>> Lortzingstr. 11, 45128 Essen, Tel. +49 177 7937487
>> 
>> Meister für Veranstaltungstechnik (Bühne/Studio)
>> Tonmeister VDT
>> 
>> http://stackingdwarves.net
>> 
>> ___
>> Sursound mailing list
>> Sursound@music.vt.edu
>> https://mail.music.vt.edu/mailman/listinfo/sursound - unsubscribe here,
>> edit account or options, view archives and so on.
>> 
> 
> 
> 
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Re: [Sursound] Advice on new loudspeaker array... Genelec 8010 speakers?

2015-10-15 Thread Augustine Leudar
Here you go Jorn - a speaker with a narrow dispersion pattern - (they call
it parametric or sound lazer) :

http://www.soundlazer.com/what-is-a-parametric-speaker/

On 15 October 2015 at 14:14, Jörn Nettingsmeier <
netti...@stackingdwarves.net> wrote:

> On 10/15/2015 02:35 PM, Augustine Leudar wrote:
>
>> Possibly ambisonics is different - but not all multichannel audio uses
>> ambisonics - certainly with vbap for example  if your speakers are wide
>> apart you don't want a big gap when panning between them then  wider
>> dispersal would be advantageous if the speakers are very close together I
>> could see it would introduce coloration when the directivity of the
>> speakers overlapped - with wavefield synthesis the smaller the gaps
>> between
>> speaker cones the higher frequencies can be succesfully spatialised - so I
>> guess for wfs more "pinpoint" directivty would be preferred - I may also
>> be
>> wrong ! For creating true walk around 3d soundscapes with no sweet spot
>> for
>> me a useful tool would be a driver which would be a sphere which put out
>> sounds in all directions (360) - because thats how sound often propogates
>> in real space (eg a twig cracking up a tree will not just put out sound in
>> the 180/90 degree space on one side) The dispersal pattern of speakers
>> isnt
>> often considered when building these kind of systems so its an interesting
>> topic !
>>
>
>
> Speakers with "narrow dispersal patterns" do not exist. All speakers are
> near-omni in the bass. What a narrow pattern gives you is a longer throw of
> the HF, which can be useful in traditional sound reinforcement.
>
> But in massive multichannel environments, overly directional speakers will
> add up to a muddy, bass-heavy diffuse field. I'd always go for as wide a
> coverage angle as possible, unless I have to deal with a really huge space.
> Since you can't avoid off-axis sound, at least make it spectrally balanced.
>
>
>
>
>
> --
> Jörn Nettingsmeier
> Lortzingstr. 11, 45128 Essen, Tel. +49 177 7937487
>
> Meister für Veranstaltungstechnik (Bühne/Studio)
> Tonmeister VDT
>
> http://stackingdwarves.net
>
> ___
> Sursound mailing list
> Sursound@music.vt.edu
> https://mail.music.vt.edu/mailman/listinfo/sursound - unsubscribe here,
> edit account or options, view archives and so on.
>



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Re: [Sursound] Advice on new loudspeaker array... Genelec 8010 speakers?

2015-10-15 Thread Augustine Leudar
no - he was saying that speakers with a narrow dispersal dont exist - which
they do. He was also saying that bass radiates more widely than higher
frequencies and is more omin directional - which is true so if speakers are
far apart if you dont have a balanced off axis spectral response then the
whole thing will sound bassier as the lower frequencies will diffuse better
than the higher ones - which is good point. Conclusion : the lsr 305/8 or
any speaker with good off axis response would probably be good for a larger
instalation.

On 15 October 2015 at 14:29, Pierre Alexandre Tremblay 
wrote:

> I think that what Jorn is saying is that a lot of small speakers is not
> good/powerful enough to provide a proper, powerful, dynamic, full range
> point in the space, which is still a very popular gesture in most panning
> methods.
>
>
> Le 15 oct. 2015 à 14:24, Augustine Leudar  a
> écrit :
>
> > Not necessarilly true Jorn - we've had a few pieces at Sarc where all
> > speakers went oomph at the same time - painful
> >
> > On 15 October 2015 at 14:14, Jörn Nettingsmeier <
> > netti...@stackingdwarves.net> wrote:
> >
> >> On 10/15/2015 11:31 AM, Sebastian Gabler wrote:
> >>
> >>> That's specifically true for the 8010s. Their max SPL @ 1 m is app. 105
> >>> dB per pair, but the long term SPL is only 91 dB, expressly stated that
> >>> it is because of the protection circuit in the manual.
> >>> That being said, with 32 speakers, the SPL is 4 time higher than for 2.
> >>> That's far beyond comfort zone for any listener for the specified
> values.
> >>>
> >>
> >> Careful there. No program material ever uses all speakers for the oomph
> >> passages. Usually it's a very sharply located source that shouts out at
> >> you, which basically means every single speaker has to be able to
> deliver
> >> that oomph, single-handedly. Curse of multichannel. Content doesn't
> scale :(
> >>
> >> --
> >> Jörn Nettingsmeier
> >> Lortzingstr. 11, 45128 Essen, Tel. +49 177 7937487
> >>
> >> Meister für Veranstaltungstechnik (Bühne/Studio)
> >> Tonmeister VDT
> >>
> >> http://stackingdwarves.net
> >>
> >> ___
> >> Sursound mailing list
> >> Sursound@music.vt.edu
> >> https://mail.music.vt.edu/mailman/listinfo/sursound - unsubscribe here,
> >> edit account or options, view archives and so on.
> >>
> >
> >
> >
> > --
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Re: [Sursound] Advice on new loudspeaker array... Genelec 8010 speakers?

2015-10-15 Thread Augustine Leudar
another thing David - the B& W are designed for studio/mastering/audiophile
use and so yes sound emanating from the back and sides are not a good thing
especially in a studio environment when you want to control the acoustics
for neutral monitoring - but thats quite a different application to the one
I am talking about in art installations in which a 360 degree driver might
be useful - Id certainly never use one for mixing !

On 15 October 2015 at 13:49, David Pickett  wrote:

> At 14:35 15-10-15, Augustine Leudar wrote:
>
> >For creating true walk around 3d soundscapes with no sweet spot for
> >me a useful tool would be a driver which would be a sphere which put out
> >sounds in all directions (360) - because thats how sound often propogates
> >in real space (eg a twig cracking up a tree will not just put out sound in
> >the 180/90 degree space on one side)
>
> But surely, saying that ignores the fact that in a real room what comes
> out of the back (and sides) will be reflected from the room boundaries.  I
> think this is why the B 801 was in its day almost revolutionary.  Because
> hardly any sound came out of the back (or sides) of the speaker cabinet,
> one could put it in almost any room and it would sound the same.
>
> David
>
>
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Re: [Sursound] Advice on new loudspeaker array... Genelec 8010 speakers?

2015-10-15 Thread Jörn Nettingsmeier

On 10/15/2015 02:35 PM, Augustine Leudar wrote:

Possibly ambisonics is different - but not all multichannel audio uses
ambisonics - certainly with vbap for example  if your speakers are wide
apart you don't want a big gap when panning between them then  wider
dispersal would be advantageous if the speakers are very close together I
could see it would introduce coloration when the directivity of the
speakers overlapped - with wavefield synthesis the smaller the gaps between
speaker cones the higher frequencies can be succesfully spatialised - so I
guess for wfs more "pinpoint" directivty would be preferred - I may also be
wrong ! For creating true walk around 3d soundscapes with no sweet spot for
me a useful tool would be a driver which would be a sphere which put out
sounds in all directions (360) - because thats how sound often propogates
in real space (eg a twig cracking up a tree will not just put out sound in
the 180/90 degree space on one side) The dispersal pattern of speakers isnt
often considered when building these kind of systems so its an interesting
topic !



Speakers with "narrow dispersal patterns" do not exist. All speakers are 
near-omni in the bass. What a narrow pattern gives you is a longer throw 
of the HF, which can be useful in traditional sound reinforcement.


But in massive multichannel environments, overly directional speakers 
will add up to a muddy, bass-heavy diffuse field. I'd always go for as 
wide a coverage angle as possible, unless I have to deal with a really 
huge space. Since you can't avoid off-axis sound, at least make it 
spectrally balanced.






--
Jörn Nettingsmeier
Lortzingstr. 11, 45128 Essen, Tel. +49 177 7937487

Meister für Veranstaltungstechnik (Bühne/Studio)
Tonmeister VDT

http://stackingdwarves.net

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Re: [Sursound] Advice on new loudspeaker array... Genelec 8010 speakers?

2015-10-15 Thread Augustine Leudar
What can I say Jorn - we have some and they work - not as well as
adverstised obviously but strip away the hype they have something thta mor
eor less does as described -  you'll have to wait a while for those
measurements ;)

On 15 October 2015 at 14:39, Jörn Nettingsmeier <
netti...@stackingdwarves.net> wrote:

> On 10/15/2015 03:30 PM, Augustine Leudar wrote:
>
>> I admit there use of the word "ultrasound" is ridiculous - but they do
>> work
>>
>> On 15 October 2015 at 14:27, Augustine Leudar 
>> wrote:
>>
>> Here you go Jorn - a speaker with a narrow dispersion pattern - (they call
>>> it parametric or sound lazer) :
>>>
>>> http://www.soundlazer.com/what-is-a-parametric-speaker/
>>>
>>
> Hmmm. That website completely fails to amaze me.  ;)
> Show me your polar pattern (per frequency), show me your amplitude
> response, let me look at the phase, then we talk.
>
> Their selling point on page one seems to be "works great in advertising"
> :-D
>
> Not to say this thing can't be amazing fun to play with. But I'm not
> considering it a serious tool unless I can see the specs.
>
> Which will be sobering, unless their other project on kickstarter took off
> as well and they have the PhysicsIsLookingElsewhere™ field working by now.
> ;)
>
>
>
> --
> Jörn Nettingsmeier
> Lortzingstr. 11, 45128 Essen, Tel. +49 177 7937487
>
> Meister für Veranstaltungstechnik (Bühne/Studio)
> Tonmeister VDT
>
> http://stackingdwarves.net
>
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> Sursound@music.vt.edu
> https://mail.music.vt.edu/mailman/listinfo/sursound - unsubscribe here,
> edit account or options, view archives and so on.
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Re: [Sursound] Advice on new loudspeaker array... Genelec 8010 speakers?

2015-10-15 Thread Steven Boardman
I did a test with the genelec 6010s I have.
The bass distorts way before before any high frequency problems occur, and
woofer distortion happens before any protection circuit cuts in.. When the
crossover is made higher, more level can be achieved at those frequencies,
with less I'll effects. (I didn't push to far as I still need them.:)
The program material used, was mastered music tracks of various genres.
Obviously in a mixing situation high frequency overload could be different.
Subs are a must. The more you have, the more even the response around the
room?

Steve.
On 15 Oct 2015 19:18, "Fons Adriaensen"  wrote:

> On Thu, Oct 15, 2015 at 12:14:59PM +0100, Dave Malham wrote:
>
> > Indeed, but for real-world signals bass tends (!) to be higher - at
> least,
> > if you don't want fried ears - so that's where it shows up.
>
> I can only confirm this. The last few months I've been using
> a room equipped with 36 small Genelecs.
> Without a quite steep highpass or xover to subs it's fairly
> easy to drive them into producing a very dirty sound even at
> moderate levels. You *do* need subs with those, even if you
> don't want 'club sound'.
>
> Ciao,
>
> --
> FA
>
> A world of exhaustive, reliable metadata would be an utopia.
> It's also a pipe-dream, founded on self-delusion, nerd hubris
> and hysterically inflated market opportunities. (Cory Doctorow)
>
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Re: [Sursound] Advice on new loudspeaker array... Genelec 8010 speakers?

2015-10-15 Thread Dave Malham
One of the things that should be investigated in conjunction with higher
order Ambisonics material would be to "fade down" the higher order
components as the frequency drops, thus spreading the bass over more
speakers, reducing the strain on the individual speakers whilst maintaining
the spectral balance - hey, wasn't that Richard Lee's Powered Integrated
Sub concept from several years ago?? Doesn't help with first order materiel
but

Dave


On 15 October 2015 at 21:07, Steven Boardman 
wrote:

> I did a test with the genelec 6010s I have.
> The bass distorts way before before any high frequency problems occur, and
> woofer distortion happens before any protection circuit cuts in.. When the
> crossover is made higher, more level can be achieved at those frequencies,
> with less I'll effects. (I didn't push to far as I still need them.:)
> The program material used, was mastered music tracks of various genres.
> Obviously in a mixing situation high frequency overload could be different.
> Subs are a must. The more you have, the more even the response around the
> room?
>
> Steve.
> On 15 Oct 2015 19:18, "Fons Adriaensen"  wrote:
>
> > On Thu, Oct 15, 2015 at 12:14:59PM +0100, Dave Malham wrote:
> >
> > > Indeed, but for real-world signals bass tends (!) to be higher - at
> > least,
> > > if you don't want fried ears - so that's where it shows up.
> >
> > I can only confirm this. The last few months I've been using
> > a room equipped with 36 small Genelecs.
> > Without a quite steep highpass or xover to subs it's fairly
> > easy to drive them into producing a very dirty sound even at
> > moderate levels. You *do* need subs with those, even if you
> > don't want 'club sound'.
> >
> > Ciao,
> >
> > --
> > FA
> >
> > A world of exhaustive, reliable metadata would be an utopia.
> > It's also a pipe-dream, founded on self-delusion, nerd hubris
> > and hysterically inflated market opportunities. (Cory Doctorow)
> >
> > ___
> > Sursound mailing list
> > Sursound@music.vt.edu
> > https://mail.music.vt.edu/mailman/listinfo/sursound - unsubscribe here,
> > edit account or options, view archives and so on.
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As of 1st October 2012, I have retired from the University.

These are my own views and may or may not be shared by the University

Dave Malham
Honorary Fellow, Department of Music
The University of York
York YO10 5DD
UK

'Ambisonics - Component Imaging for Audio'
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Re: [Sursound] Advice on new loudspeaker array... Genelec 8010 speakers?

2015-10-15 Thread Charles Veasey
Thanks everyone for the information!

Using four subs was mentioned a couple of times. I've never used or
experienced more than two in an array. What is the justification? I assume
that given a square room, you'd place one in each corner?

Also - a good point was made regarding the cost effectiveness of using 32
channels in total, i.e: 28.4, instead of 32.2.

As a point of reference, this is the space where I'm hoping to install the
new speakers:
http://www.iaia.edu/wp-content/uploads/2011/07/Bach_01.2011.2_sm.jpg

The image shows our 24' diameter hemispherical projection surface. Perhaps
digital dome theaters are particularly suited for Ambisonics given the
spherical shape and the obvious shortcomings of 5.1 in this space. The
video standard is a 'domemaster', a square video with a circular mask.
Theaters must decode the domemaster to 'n' projectors. I would love to see
domemaster videos shipped with an Ambisonics track, so that the sound could
be decoded to 'n' speakers.







On Thu, Oct 15, 2015 at 8:08 AM, Jörn Nettingsmeier <
netti...@stackingdwarves.net> wrote:

> On 10/15/2015 03:59 PM, Jörn Nettingsmeier wrote:
>
>> On 10/15/2015 03:41 PM, Augustine Leudar wrote:
>>
>>> What can I say Jorn - we have some and they work - not as well as
>>> adverstised obviously but strip away the hype they have something thta
>>> mor
>>> eor less does as described -  you'll have to wait a while for those
>>> measurements ;)
>>>
>>
>> For now, the low cutoff frequency would be enough.
>>
>> Mind you, I'm not saying that these things cannot be great creative
>> tools. But I'm a sound engineer. I need to deal with the artistic output
>> of other people, in such a way that they are not going to ram the
>> speakers down my throat because half of the spectrum is missing. I need
>> general-purpose speakers, which on a bad day means ten octaves and 110dB
>> peak SPL.
>>
>> We've seen all those outlandish claims of magical waveguides that are
>> just fractions of the wavelength in diameter and yet shape the sound so
>> wonderfully that a 20Hz beam will travel all the way to the moon (using
>> the revolutionary VacuProof™ technology that will finally bring
>> cinema-friendly space battles). The problem is, this waveshaping is not
>> physically possible. You can make a plane wave, but unless it's a huge
>> plane wave with respect to frequency, the edge dispersion will make it
>> fall apart. In the end, it's just a point source with a little dent in
>> it. I don't even need to wait for measurements.
>>
>> Even if you consider ultrasonic systems: at some point, the ultrasound
>> has to be demodulated (it is actually demodulated _everywhere_ in the
>> beam), and then you again have a frequency-dependent radiation pattern.
>> So yes, some years in the future maybe we have an ultrasonic projector
>> that is actually capable of putting a kick drum right in the middle of
>> the room without frying anything in its path. But as soon as the
>> baseband sound materializes, it will be (almost) omnidirectional again.
>>
>>
>>
> Here's an interesting datapoint:
>
> http://www.ultrasonic-audio.com/images/Acouspade_vs_Audio_Spotlight.png
>
> Consider the Acouspade, to the right. The polar pattern is truly nice,
> unless you look at the fact that we are not told what happens below 500 Hz
> (because very likely, nothing much is happening there), and we take note of
> the tiny, tiny dotted line that denotes 4 kHz, which is down by around 18
> dB on-axis, indicating that in the treble range, not much is happening
> either.
>
> This is a wonderful tool if you want to whisper textual information at
> your visitor. But what you are actually perceiving is your amazing ability
> to suspend disbelief in the presence of a friendly voice from your own
> species.
>
>
> --
> Jörn Nettingsmeier
> Lortzingstr. 11, 45128 Essen, Tel. +49 177 7937487
>
> Meister für Veranstaltungstechnik (Bühne/Studio)
> Tonmeister VDT
>
> http://stackingdwarves.net
>
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Re: [Sursound] Advice on new loudspeaker array... Genelec 8010 speakers?

2015-10-15 Thread Fons Adriaensen
On Thu, Oct 15, 2015 at 12:14:59PM +0100, Dave Malham wrote:

> Indeed, but for real-world signals bass tends (!) to be higher - at least,
> if you don't want fried ears - so that's where it shows up.

I can only confirm this. The last few months I've been using
a room equipped with 36 small Genelecs.
Without a quite steep highpass or xover to subs it's fairly
easy to drive them into producing a very dirty sound even at
moderate levels. You *do* need subs with those, even if you
don't want 'club sound'.

Ciao,

-- 
FA

A world of exhaustive, reliable metadata would be an utopia.
It's also a pipe-dream, founded on self-delusion, nerd hubris
and hysterically inflated market opportunities. (Cory Doctorow)

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Re: [Sursound] Advice on new loudspeaker array... Genelec 8010 speakers?

2015-10-14 Thread Charles Veasey
Yes, those are too expensive given the spatial resolution I'd like. My
budget is ~$30-40k.

If the 8010s seem too weak, then maybe something like the Genelec 8030B or
Meyer MM-4XPD.

Also, for the computer interface, I'm thinking about RME's HDSPe
RayDAT and M-32
DA / M-16 DA

thanks,
Charles



On Wed, Oct 14, 2015 at 11:31 AM, Augustine Leudar <
augustineleu...@gmail.com> wrote:

> Maybe out of your budget - but check out the Genelec 8351 a - they also
> have a room correction system that will work on arrays of up to 32
> speakers.
> For those that do not have gear acquisition syndrome here is some
> ridiculous holywood styled marketing :
>
> https://www.youtube.com/watch?v=lokCwTKjz0E
>
> For those with G.A.S. - no. Don't click the link.
>
> On 14 October 2015 at 18:20, Charles Veasey 
> wrote:
>
> > Hello,
> >
> > We're upgrading our current 15.2 (Behringer) loudspeaker array. I'd like
> to
> > get more spatial resolution and higher quality speakers. Right now I'm
> > thinking about (32) Genelec 8010 and (2) Genelec 7050B subs.
> >
> > However, I have some concerns about the Genelec 8010s selling at only
> $350.
> >
> > Does anyone have experience with these speakers, or have advice for my
> > situation?
> >
> > thanks,
> > Charles
> > -- next part --
> > An HTML attachment was scrubbed...
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> > >
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> > edit account or options, view archives and so on.
> >
>
>
>
> --
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Re: [Sursound] Advice on new loudspeaker array... Genelec 8010 speakers?

2015-10-14 Thread Augustine Leudar
you might want to consider the PMC tb2s   the are nice speakers . You can
get an active pair for around 1500 dollars. 8010 will have no bottom end
its tiny.

On 14 October 2015 at 18:51, Charles Veasey 
wrote:

> Yes, those are too expensive given the spatial resolution I'd like. My
> budget is ~$30-40k.
>
> If the 8010s seem too weak, then maybe something like the Genelec 8030B or
> Meyer MM-4XPD.
>
> Also, for the computer interface, I'm thinking about RME's HDSPe
> RayDAT and M-32
> DA / M-16 DA
>
> thanks,
> Charles
>
>
>
> On Wed, Oct 14, 2015 at 11:31 AM, Augustine Leudar <
> augustineleu...@gmail.com> wrote:
>
> > Maybe out of your budget - but check out the Genelec 8351 a - they also
> > have a room correction system that will work on arrays of up to 32
> > speakers.
> > For those that do not have gear acquisition syndrome here is some
> > ridiculous holywood styled marketing :
> >
> > https://www.youtube.com/watch?v=lokCwTKjz0E
> >
> > For those with G.A.S. - no. Don't click the link.
> >
> > On 14 October 2015 at 18:20, Charles Veasey 
> > wrote:
> >
> > > Hello,
> > >
> > > We're upgrading our current 15.2 (Behringer) loudspeaker array. I'd
> like
> > to
> > > get more spatial resolution and higher quality speakers. Right now I'm
> > > thinking about (32) Genelec 8010 and (2) Genelec 7050B subs.
> > >
> > > However, I have some concerns about the Genelec 8010s selling at only
> > $350.
> > >
> > > Does anyone have experience with these speakers, or have advice for my
> > > situation?
> > >
> > > thanks,
> > > Charles
> > > -- next part --
> > > An HTML attachment was scrubbed...
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> > >
> >
> https://mail.music.vt.edu/mailman/private/sursound/attachments/20151014/902db591/attachment.html
> > > >
> > > ___
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> > > Sursound@music.vt.edu
> > > https://mail.music.vt.edu/mailman/listinfo/sursound - unsubscribe
> here,
> > > edit account or options, view archives and so on.
> > >
> >
> >
> >
> > --
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[Sursound] Advice on new loudspeaker array... Genelec 8010 speakers?

2015-10-14 Thread Charles Veasey
Hello,

We're upgrading our current 15.2 (Behringer) loudspeaker array. I'd like to
get more spatial resolution and higher quality speakers. Right now I'm
thinking about (32) Genelec 8010 and (2) Genelec 7050B subs.

However, I have some concerns about the Genelec 8010s selling at only $350.

Does anyone have experience with these speakers, or have advice for my
situation?

thanks,
Charles
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Re: [Sursound] Advice on new loudspeaker array... Genelec 8010 speakers?

2015-10-14 Thread Augustine Leudar
apart from genelec and PMC another speaker I see quite often in these kind
of facilities is the Mackie hr824 - the new mark 2 measures well. You can
check anechoic measurements (time and frequency response) of various
different speaker manufacturers here :

http://resolution.nodecube.net/products/products_subcategory.php?subcat=Monitoring

best,
Gus

On 14 October 2015 at 19:48, Augustine Leudar 
wrote:

> The rme raydat hdspe only costs £420 (600 dollarsish) amazing value I
> thought.
>
> On 14 October 2015 at 19:36, David Pickett  wrote:
>
>> At 19:51 14-10-15, Charles Veasey wrote:
>>
>> >Also, for the computer interface, I'm thinking about RME's HDSPe
>> >RayDAT and M-32
>> >DA / M-16 DA
>>
>> I can say from experience that RME interfaces are first class.  They meet
>> their specs, are reliable, and you can easily get directly in touch with
>> the company through their user forum.  The only downsides are expense (in
>> my opinion, worth it for something that is so solid) and the manuals.: if
>> you read German you are OK, but some of the English translations are a bit
>> of a challenge to a native English speaker.  Neither of these downsides is
>> any reason not to buy, however.
>>
>> David
>>
>>
>> ___
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>> Sursound@music.vt.edu
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>> edit account or options, view archives and so on.
>>
>
>
>
> --
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>



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Re: [Sursound] Advice on new loudspeaker array... Genelec 8010 speakers?

2015-10-14 Thread Ilpo Martikainen
Regarding the room response, delay etc. correction, which would be beneficial 
in this application, the smallest Genelec model having these features is 8320 
(4 in woofer). Next is 8330 with a 5in woofer. 

Best regards,

Ilpo Martikainen

> On 14 Oct 2015, at 20:31, Augustine Leudar  wrote:
> 
> Maybe out of your budget - but check out the Genelec 8351 a - they also
> have a room correction system that will work on arrays of up to 32 speakers.
> For those that do not have gear acquisition syndrome here is some
> ridiculous holywood styled marketing :
> 
> https://www.youtube.com/watch?v=lokCwTKjz0E
> 
> For those with G.A.S. - no. Don't click the link.
> 
> On 14 October 2015 at 18:20, Charles Veasey 
> wrote:
> 
>> Hello,
>> 
>> We're upgrading our current 15.2 (Behringer) loudspeaker array. I'd like to
>> get more spatial resolution and higher quality speakers. Right now I'm
>> thinking about (32) Genelec 8010 and (2) Genelec 7050B subs.
>> 
>> However, I have some concerns about the Genelec 8010s selling at only $350.
>> 
>> Does anyone have experience with these speakers, or have advice for my
>> situation?
>> 
>> thanks,
>> Charles
>> -- next part --
>> An HTML attachment was scrubbed...
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>> https://mail.music.vt.edu/mailman/private/sursound/attachments/20151014/902db591/attachment.html
>>> 
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>> edit account or options, view archives and so on.
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> 
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Re: [Sursound] Advice on new loudspeaker array... Genelec 8010 speakers?

2015-10-14 Thread Martin Richards


Sent from my iPhone

> On 14 Oct 2015, at 18:31, Augustine Leudar  wrote:
> 
> Maybe out of your budget - but check out the Genelec 8351 a - they also
> have a room correction system that will work on arrays of up to 32 speakers.
> For those that do not have gear acquisition syndrome here is some
> ridiculous holywood styled marketing :
> 
> https://www.youtube.com/watch?v=lokCwTKjz0E
> 
> For those with G.A.S. - no. Don't click the link.
> 
> On 14 October 2015 at 18:20, Charles Veasey 
> wrote:
> 
>> Hello,
>> 
>> We're upgrading our current 15.2 (Behringer) loudspeaker array. I'd like to
>> get more spatial resolution and higher quality speakers. Right now I'm
>> thinking about (32) Genelec 8010 and (2) Genelec 7050B subs.
>> 
>> However, I have some concerns about the Genelec 8010s selling at only $350.
>> 
>> Does anyone have experience with these speakers, or have advice for my
>> situation?
>> 
>> thanks,
>> Charles
>> -- next part --
>> An HTML attachment was scrubbed...
>> URL: <
>> https://mail.music.vt.edu/mailman/private/sursound/attachments/20151014/902db591/attachment.html
>>> 
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>> 
> 
> 
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Re: [Sursound] Advice on new loudspeaker array... Genelec 8010 speakers?

2015-10-14 Thread Augustine Leudar
Maybe out of your budget - but check out the Genelec 8351 a - they also
have a room correction system that will work on arrays of up to 32 speakers.
For those that do not have gear acquisition syndrome here is some
ridiculous holywood styled marketing :

https://www.youtube.com/watch?v=lokCwTKjz0E

For those with G.A.S. - no. Don't click the link.

On 14 October 2015 at 18:20, Charles Veasey 
wrote:

> Hello,
>
> We're upgrading our current 15.2 (Behringer) loudspeaker array. I'd like to
> get more spatial resolution and higher quality speakers. Right now I'm
> thinking about (32) Genelec 8010 and (2) Genelec 7050B subs.
>
> However, I have some concerns about the Genelec 8010s selling at only $350.
>
> Does anyone have experience with these speakers, or have advice for my
> situation?
>
> thanks,
> Charles
> -- next part --
> An HTML attachment was scrubbed...
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Re: [Sursound] Advice on new loudspeaker array... Genelec 8010 speakers?

2015-10-14 Thread Eero Aro

Hi

My current speakers are Genelec 8040's. The sub is 7050B, although it isn't
intended to be used with the 8040:s. I use a designated cross-over for 
the sub.

The 8040 goes down to 48 Hz, so the sub actually only takes care of the
first two octaves.

The stereo imaging is very good. I have also built during the years a lot of
surround setups with Genelec speakers, mainly used S30 Triamps and 1030:s.

I now use the speakers for audio restoration, so I need very accurate 
reproduction

of very tiny details. That's one reason why I chose Genelecs.

Ok - I am Finnish and Genelec is Finnish, so you have the right to think 
that I
am biased. I have been using Genelec loudspeakers from the beginning of 
1980's,

but I don't have any connection with the company or their business.

I have no experience of Behringer speakers, so I cannot compare.

Eero
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Re: [Sursound] Advice on new loudspeaker array... Genelec 8010 speakers?

2015-10-14 Thread Augustine Leudar
The rme raydat hdspe only costs £420 (600 dollarsish) amazing value I
thought.

On 14 October 2015 at 19:36, David Pickett  wrote:

> At 19:51 14-10-15, Charles Veasey wrote:
>
> >Also, for the computer interface, I'm thinking about RME's HDSPe
> >RayDAT and M-32
> >DA / M-16 DA
>
> I can say from experience that RME interfaces are first class.  They meet
> their specs, are reliable, and you can easily get directly in touch with
> the company through their user forum.  The only downsides are expense (in
> my opinion, worth it for something that is so solid) and the manuals.: if
> you read German you are OK, but some of the English translations are a bit
> of a challenge to a native English speaker.  Neither of these downsides is
> any reason not to buy, however.
>
> David
>
>
> ___
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Re: [Sursound] Advice on new loudspeaker array... Genelec 8010 speakers?

2015-10-14 Thread Eric Benjamin
All of my spatial sound research has been self funded. As such, Im very 
sensitive to the budgetary issues. I had initially selected the then-current 
genelec 1028a for my array, but then I discovered that the JBL lsr25 had 
flatter response, greater low frequency extension, more acoustic output, and 
cost half as much. The pricing was such that JBL was far cheaper here than in 
Europe.

So, based on that, have a look at the LSR308. Its $250 instead of $350 for 
the genelec, and has an 8 woofer instead of a 3 woofer. Give it a 
listen!

Eric
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Re: [Sursound] Advice on new loudspeaker array... Genelec 8010 speakers?

2015-10-14 Thread Augustine Leudar
Yeah actually the lsr308 and lsr305 have been getting rave reviews and cost
very little their waveguide gives wide dispersal (good off axis response)
which is probably good for spatial audio. Speaker guru Earl Geddes measured
them flatter than his own speakers.  The yamaha hs8 is also popular as a
studio Monitor and cheap . Adam 7x more expensive but seems popular too as
does the aforementioned neuman . I guess I'm trying to echo Ericsson
sentiment - more expensive is not always better.

On Wednesday, 14 October 2015, Eric Benjamin  wrote:

> All of my spatial sound research has been self funded. As such, Im
> very sensitive to the budgetary issues. I had initially selected the
> then-current genelec 1028a for my array, but then I discovered that the JBL
> lsr25 had flatter response, greater low frequency extension, more acoustic
> output, and cost half as much. The pricing was such that JBL was far
> cheaper here than in Europe.
>
> So, based on that, have a look at the LSR308. Its $250 instead of
> $350 for the genelec, and has an 8 woofer instead of a 3
> woofer. Give it a listen!
>
> Eric
> -- next part --
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Re: [Sursound] Advice on new loudspeaker array... Genelec 8010 speakers?

2015-10-14 Thread Augustine Leudar
ps I have the RME raydat - its a great card - you will need the ADAT
converters as well if you dont already. I had behringer ada8000 but they
blew quite often - a power issue which newer versions dont have. Howver the
new 8200 have no such issues and reportably midas preamps. ada8000 about
150 dollars each 8200 around 250 dollars

On 14 October 2015 at 19:32, Augustine Leudar 
wrote:

> you might want to consider the PMC tb2s   the are nice speakers . You can
> get an active pair for around 1500 dollars. 8010 will have no bottom end
> its tiny.
>
> On 14 October 2015 at 18:51, Charles Veasey 
> wrote:
>
>> Yes, those are too expensive given the spatial resolution I'd like. My
>> budget is ~$30-40k.
>>
>> If the 8010s seem too weak, then maybe something like the Genelec 8030B or
>> Meyer MM-4XPD.
>>
>> Also, for the computer interface, I'm thinking about RME's HDSPe
>> RayDAT and M-32
>> DA / M-16 DA
>>
>> thanks,
>> Charles
>>
>>
>>
>> On Wed, Oct 14, 2015 at 11:31 AM, Augustine Leudar <
>> augustineleu...@gmail.com> wrote:
>>
>> > Maybe out of your budget - but check out the Genelec 8351 a - they also
>> > have a room correction system that will work on arrays of up to 32
>> > speakers.
>> > For those that do not have gear acquisition syndrome here is some
>> > ridiculous holywood styled marketing :
>> >
>> > https://www.youtube.com/watch?v=lokCwTKjz0E
>> >
>> > For those with G.A.S. - no. Don't click the link.
>> >
>> > On 14 October 2015 at 18:20, Charles Veasey 
>> > wrote:
>> >
>> > > Hello,
>> > >
>> > > We're upgrading our current 15.2 (Behringer) loudspeaker array. I'd
>> like
>> > to
>> > > get more spatial resolution and higher quality speakers. Right now I'm
>> > > thinking about (32) Genelec 8010 and (2) Genelec 7050B subs.
>> > >
>> > > However, I have some concerns about the Genelec 8010s selling at only
>> > $350.
>> > >
>> > > Does anyone have experience with these speakers, or have advice for my
>> > > situation?
>> > >
>> > > thanks,
>> > > Charles
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