Re: [slim] kinks in the SB2?

2005-03-31 Thread Robin Bowes
Phil Karn wrote:
It just occurred to me that I could try forcing the Ethernet down to 10 
megabits/sec and see if the problem still occurs. If it's indeed due to 
DAC starvation from lack of proper CPU real-time management, this might 
work around the problem by limiting the peak speed of the buffer-fill 
burst to only 10 Mb/s.
Phil,
I believe the wired link on the SB is only 10MB/s anyway.
R.
--
http://robinbowes.com
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Re: [slim] kinks in the SB2?

2005-03-30 Thread Mike Reeve
Julian Alden-Salter [EMAIL PROTECTED] writes:

 When I was setting up my squeezebox2 I had to remove my
 behringer ultramatch (mk1) from between the sb2 and my dac.
 With the ultramatch (a jitter buster amongst other things) in the loop
 I got no sound and the emphasis light
 on both the dac and the behringer flashed randomly.
 
I was surprised to read this as when I connected my new Squeebox 2 to
first an Apogee Big Ben and then a Genesis Digital Lens
both locked instantly (the Big Ben in narrow mode) and showed exactly 44.10.
 
As I happen to have a Behringer Ultramatch Pro
(i.e. the MK2 24/96 version of the Ultramatch) lying around
I just connected my Squeezebox 2 to it and it locks instantly/cleanly ...
 
If I recall correctly the Ultramatch MK1 used the old
CS8402 SPDIF receiver (whereas the MK2 uses the newer 8412/8414 series),
I wonder which receiver the Rotel  RSX1056 uses ...
 
Mike
 


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Re: [slim] kinks in the SB2?

2005-03-30 Thread Sean Adams

I wonder which receiver the Rotel  RSX1056 uses ...
I don't think it's a timing / jitter issue. More likely a compatibility 
issue or error in the channel status data or something like that.

I've been procrastinating upgrading my home receiver to a RSX1056 so I 
can fiddle around with driving its RS232 interface through the 
geekport... I guess this is my excuse. :)

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Re: [slim] kinks in the SB2?

2005-03-30 Thread Sean Adams
On Mar 30, 2005, at 6:44 AM, Phillip Kerman wrote:
ouldn't be. Which receiver?
Rotel  RSX1056.  It's weird because it just does this in
the middle of
a
song--not between tracks as was the case before.
Coax or optical?

Coax.
Ok let us know if it's different on the optical - may be a signal 
integrity issue in which case the optical could be better.

In the mean time I will wait for my RSX1056 to arrive. :)
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RE: [slim] kinks in the SB2?

2005-03-30 Thread Phillip Kerman
 
  First, mine goes blank for no apparent reason sometimes.  
 Blank screen.
 
 
 Some new information suggests that this might be triggered when the 
 server is stopped and then restarted (ie something to do with the 
 reconnection logic on the client). Does that jibe?
 
 _

More like when I go through the connection process--like right after it gets
a DHCP IP address.

Thanks,
Phillip

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Re: [slim] kinks in the SB2? [a little OT: audiophilia]

2005-03-30 Thread Jeff Moore
2005-03-30-09:48:22 Sean Adams:
 I've been procrastinating upgrading my home receiver to a RSX1056 so I 
 can fiddle around with driving its RS232 interface through the 
 geekport... I guess this is my excuse. :)

My apologies for another post related to the disease of audiophilia
rather than directly about Slimstuff (soon's my shiny silver SB2 ships,
I'll get dragged back on topic) but that won't stop me.  I haven't heard
this Rotel, although Rotels through the years have sounded swell and
this one may sound absolutely fabulous, so this isn't to be interpreted
as anything negative about the RSX1056, and it'd be swell for you to end
up having the proper hardware to debug this digital-lock problem,
but...  when I hear of someone shopping for an AVR in that price range,
I have to recommend giving a listen to the Arcams (AVR-250 and AVR-300)
before making a final decision.

I have an AVR-250, and it offers more than a hint of the spooky
subtle-detail reproduction from digital sources provided by its fancy
sibling the AV8.  There's something about the way current Arcams do
D/A that I like.

That having been said, I can report on the downside: my AVR-250
occasionally (maybe a couple of times a week) gets a little confused,
for example after switching from a digital input to the built-in tuner
no sound comes out, but switching back and forth once more fixes it.  I
never had this problem with a faithful Denon, but the musicality of the
Arcam totally makes it worth putting up with a few minor quirks, at
least to me.

The Arcams can be controlled via an RS-232 port after the fashion of all
that fancy-pants installer-integrated stuff;  is that the RS-232
functionality you were referring to?  The codes are toward the end of
the manual:

  http://www.arcam.co.uk/downloads/DiVA%20AVR250%20handbook.pdf

Anyhow, sorry for the hijack, and back to your regularly-scheduled
program.  For a hint of the on-topic, my AVR-250 is getting along swell
fed by an SB1 and we'll see Real Soon (I hope) how it gets on with the
miracle of the SB2.
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Re: [slim] kinks in the SB2?

2005-03-30 Thread Phil Karn
Phillip Kerman wrote:
First, mine goes blank for no apparent reason sometimes.  Blank screen.
I see that too. I don't think the unit actually crashes, but it can be 
disconcerting.

Also, I'm trying to compare the digital out into my DAC to the internal DAC
but the digital out can't stay locked (I think that's it... my receiver
keeps reseting like it used to between PCM and MP3).
I wonder if this is could be related to the crunchy distortion I 
reported last night with my own SB2. I can't confirm it, but it very 
definitely sounds like the firmware in the box is starving the DAC when 
it has to handle the sustained, high speed burst of incoming traffic 
that fills up the playback buffer with raw PCM data. If the DAC is 
indeed being intermittently starved, perhaps this is killing the clock 
on the S/P-DIF output and making it difficult for your external DAC to 
maintain lock.

Does the problem happen on all files, or only those transcoded to raw, 
high speed PCM? And does it persist through the entire track, or does it 
only happen at the beginning? The crunchy distortion I notice on my 
SB2 only occurs on raw, high speed PCM, and only  until the buffer 
fills. When that happens and the server backs off to its maintenance 
speed of about 1.4 megabits/sec, the distortion goes away.

It just occurred to me that I could try forcing the Ethernet down to 10 
megabits/sec and see if the problem still occurs. If it's indeed due to 
DAC starvation from lack of proper CPU real-time management, this might 
work around the problem by limiting the peak speed of the buffer-fill 
burst to only 10 Mb/s.

--Phil
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Re: [slim] kinks in the SB2?

2005-03-29 Thread Sean Adams

First, mine goes blank for no apparent reason sometimes.  Blank screen.
Does it keep playing audio? Can you control it from the web interface?
Also, I'm trying to compare the digital out into my DAC to the 
internal DAC
but the digital out can't stay locked (I think that's it... my receiver
keeps reseting like it used to between PCM and MP3).
That shouldn't be. Which receiver?
Plus, it won't connect to my wireless network--though the tech support 
seems
to think it's my access point.
Which access point? We tested numerous configs with several dozen 
access points. So far we've had only one issue that I know of, with a 
specific recent hardware rev of the Linksys BEFW11S4 - we're looking 
into it.

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RE: [slim] kinks in the SB2?

2005-03-29 Thread Phillip Kerman
  First, mine goes blank for no apparent reason sometimes.  
 Blank screen.
 
 Does it keep playing audio? Can you control it from the web interface?


I'll test it out more... basically, it's dead then I unplug and try again.

 
  Also, I'm trying to compare the digital out into my DAC to the 
  internal DAC
  but the digital out can't stay locked (I think that's it... 
 my receiver
  keeps reseting like it used to between PCM and MP3).
 
 That shouldn't be. Which receiver?

Rotel  RSX1056.  It's weird because it just does this in the middle of a
song--not between tracks as was the case before.


  Plus, it won't connect to my wireless network--though the 
 tech support 
  seems
  to think it's my access point.
 
 Which access point? We tested numerous configs with several dozen 
 access points. So far we've had only one issue that I know of, with a 
 specific recent hardware rev of the Linksys BEFW11S4 - we're looking 
 into it.

That's the one.

Don't get me wrong--I'm sure you all will work it out--I just feel like I'm
in the middle.

Thanks,
Phillip

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RE: [slim] kinks in the SB2?

2005-03-29 Thread Mike Hartley
Sean,
I'm about to buy my wireless set up for SB2 now.  Probably FLAC, definitely 
lossless, via Xandros (Debian based) Linux distro.  Any other hardware to stay 
away from, or more importantly that is really stable?
 
Mike

-Original Message- 
From: Sean Adams [mailto:[EMAIL PROTECTED] 
Sent: Tue 3/29/2005 9:49 PM 
To: Slim Devices Discussion 
Cc: 
Subject: Re: [slim] kinks in the SB2?





 First, mine goes blank for no apparent reason sometimes.  Blank 
screen.

Does it keep playing audio? Can you control it from the web interface?

 Also, I'm trying to compare the digital out into my DAC to the
 internal DAC
 but the digital out can't stay locked (I think that's it... my 
receiver
 keeps reseting like it used to between PCM and MP3).

That shouldn't be. Which receiver?

 Plus, it won't connect to my wireless network--though the tech support
 seems
 to think it's my access point.

Which access point? We tested numerous configs with several dozen
access points. So far we've had only one issue that I know of, with a
specific recent hardware rev of the Linksys BEFW11S4 - we're looking
into it.

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Re: [slim] kinks in the SB2?

2005-03-29 Thread Sean Adams

I'll test it out more... basically, it's dead then I unplug and try 
again.
I'm trying to identify if it's a software issue or a display issue. If 
the former, you'd probably not be able to ping it. If the latter, audio 
would probably keep playing. At any rate this is a new one but we'll 
figure it out.


ouldn't be. Which receiver?
Rotel  RSX1056.  It's weird because it just does this in the middle of 
a
song--not between tracks as was the case before.
Coax or optical?

Don't get me wrong--I'm sure you all will work it out--I just feel 
like I'm
in the middle.

Sorry about that... You are among the first ever to receive a 
Squeezebox2. At the time we shipped there were no known serious bugs 
(s/pdif and wireless issues are always serious, btw). However, given 
the literally millions of permutations of access points, operating 
systems, and stereo systems etc in the world, some new bugs are bound 
to pop up. We'll work as quickly as possible to nail them.

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