On Thu, 30 Jun 2011 14:41:23 -0400, jim moses wrote: >very good - can you tell us where to find the amplifier cards?
In the US Parts Express has a series of thes amplifier cards. A 4 ch 100w/c card without PSU runs $52. http://www.parts-express.com/pe/showdetl.cfm?Partnumber=320-302 Michael >On Thu, Jun 30, 2011 at 11:50 AM, umashankar mantravadi < >umasha...@hotmail.com> wrote: > >> >> i would agree with that (arent there too many wires already?) but i found a >> cheaper solution in chinese made digital amplifier cards. 50 dollars >> including shipping for four channels! you need to build a box etc of course. >> there are switched mode power supplies too. (search for sure electronics on >> ebay) i use light weight home made speakers with a metal hook on the back. >> just now they hang on walls, but can easily hook them up otherways. i would >> make a ring and hook assembly which can slide up the stands and locked in >> place. umashankar >> >> i have published my poems. read (or buy) at >> http://stores.lulu.com/umashankar >> > Date: Thu, 30 Jun 2011 10:53:22 -0400 >> > From: jmo...@brown.edu >> > To: sursound@music.vt.edu >> > Subject: Re: [Sursound] Portable ambisonics setup, or "how do you mount >> speakers on tubes?" >> > >> > I don't have an answer to your question. But i would consider using >> passive >> > speakers and a separate amp setup. That will take some weight off your >> > stands, and, the bigger advantage, you won't have to run power and and >> audio >> > cables to every speaker location - just to the amp setup. Simple speaker >> > wire (lamp cord) goes out to the speakers. >> > >> > we've been using this amp with some small behringer 1C monitors (JBL >> control >> > 1 knock offs - more or less) for an inexpensive solution that performs >> > surprisingly well (a bit lo-fi - especially the monitors): >> > >> http://www.bhphotovideo.com/c/product/597468-REG/Pyle_Pro_PCA3_PCA3_Mini_2_x.html >> > >> > we have a bunch of stereo kits that can be combined for multichannel use >> or >> > used separately. >> > >> > - >> > >> > something like this is more pro: >> > Rane MA4 4-Channel, 4 x 100W Amplifier MA 4 B&H Photo >> > Video< >> http://www.bhphotovideo.com/c/product/362083-REG/Rane_MA_4_MA4_4_Channel_4_x.html >> > >> > >> > and there are a lot of surround sound receivers that will do the trick >> > nicely with 5 or even 7 channels of amplification in a single unit. Many >> > even have calibration routines built in. But it's hard to find them with >> > discreet analog input these days - I would look for that or be prepared >> to >> > deal with getting a digital multichannel input to the receiver. >> > >> > jim >> > >> > On Thu, Jun 30, 2011 at 9:36 AM, Franck M. <mushroomac...@gmail.com> >> wrote: >> > >> > > I'm designing a mid-size (8 to 12-ch) ambisonics setup, using small >> active >> > > near-field studio monitors such as Fostex PM04, Focal CMS40, >> BM-5A...(the >> > > exact model will depend on the funding I'll get for this project). >> > > >> > > As it is supposed to be "portable" (well, transportable would be a >> better >> > > term) I'm planning to put the speakers on stands (such as lightning >> > > roll-stands from Manfrotto) that can be easily folded and put in some >> car >> > > (mine). >> > > >> > > For example, the 12 speakers setup would have 3 speakers per stand >> (floor, >> > > mid, ceiling speakers), each stand being in the corner of the room or, >> > > better, at the middle of each room side, in order to prevent that >> common >> > > room-corner-ultra-bass-boom effect. The 8 channels setup is simply the >> cube >> > > (or the "parallelepiped"), with no mid speaker. >> > > >> > > As some of you already may have built such fixed or portable setups, I >> was >> > > wondering how you managed to fix the speakers to (vertical or >> horizontal) >> > > tube stands or structures. For lights, they use tube clamps, but the >> weight >> > > is not the same when it comes to active loudspeakers. Most small form >> factor >> > > speakers have threaded mounting holes so you can put them on microphone >> > > stands, so I was planning to use them, but I couldn't find the "missing >> > > link" between the tube and the mounting holes... >> > > >> > > Thanks in advance for any tips! >> > > >> > > Frank >> > > _______________________________________________ >> > > Sursound mailing list >> > > Sursound@music.vt.edu >> > > https://mail.music.vt.edu/mailman/listinfo/sursound >> > > >> > >> > >> > >> > -- >> > Jim Moses >> > Technical Director/Lecturer >> > Brown University Music Department and M.E.M.E. (Multimedia and Electronic >> > Music Experiments) >> > -------------- next part -------------- >> > An HTML attachment was scrubbed... >> > URL: < >> https://mail.music.vt.edu/mailman/private/sursound/attachments/20110630/250da75c/attachment.html >> > >> > _______________________________________________ >> > Sursound mailing list >> > Sursound@music.vt.edu >> > https://mail.music.vt.edu/mailman/listinfo/sursound >> >> -------------- next part -------------- >> An HTML attachment was scrubbed... >> URL: < >> https://mail.music.vt.edu/mailman/private/sursound/attachments/20110630/5bb0d26f/attachment.html >> > >> _______________________________________________ >> Sursound mailing list >> Sursound@music.vt.edu >> https://mail.music.vt.edu/mailman/listinfo/sursound >> > > > >-- >Jim Moses >Technical Director/Lecturer >Brown University Music Department and M.E.M.E. (Multimedia and Electronic >Music Experiments) >-------------- next part -------------- >An HTML attachment was scrubbed... >URL: ><https://mail.music.vt.edu/mailman/private/sursound/attachments/20110630/40235d7a/attachment.html> >_______________________________________________ >Sursound mailing list >Sursound@music.vt.edu >https://mail.music.vt.edu/mailman/listinfo/sursound > -- Michael Graves mgraves<at>mstvp.com http://www.mgraves.org o713-861-4005 c713-201-1262 sip:mgra...@mstvp.onsip.com skype mjgraves Twitter mjgraves _______________________________________________ Sursound mailing list Sursound@music.vt.edu https://mail.music.vt.edu/mailman/listinfo/sursound
