[PD] [OT] advice about low budget multichannel hardware configs

[jurgen]

You have to be realistic - 25 channels is an extremely hardware  
ineffective configuration because audio interfaces come by increments  
of 8. Meaning for 25 channels you need 4 of those.
I believe you can do it cheapest if you use OS X: you may borrow from  
friends any brand of device and then create in OS X an 'aggregate'  
device. This combines any number of any audio interfaces into one big  
virtual interface that you then can address with jack. It also solves  
the problem of the 25th channel because the aggregate device may  
include the machines in-built audio hardware on top of fw/usb things.

Good luck
Jurgen

On Oct 25, 2009, at 12:32 AM, Greg Pond wrote:

> I am helping some friends make their first PD sound installation. They
> want 25 channels simultaneously running prerecorded samples and have a
> limited budget and as yet own no equipment. I use the presonus firepod
> external card in my work which could work with a single cpu chaining
> 3-4 of firepods together for their project but I doubt their budget
> can support buying so many of them. For amps we could build 25 simple
> chip amps with op amp ICs to keep costs down but those that I have
> built in the past are useful for low volume only.  If anyone has other
> hardware configurations and amplifier schematics that they use I would
> be grateful for suggestions.
>
> thanks
>
> Greg
>
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