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[Augustine Leudar]

Hi,
I am looking for economical ways of building a 256 channel out system which will be connected to 256 speakers for a wavefield synthesis system. I do not need a desk - or even inputs.
You can get an RME HDSPe MADI FX for around £1000 which will do 192 channel out.
Question 1
anyone know how to do a 256 channel system ? - can you expand the rme with an extra 64 channels somehow ? They would all need to be controlled by the same clock so they were perfectly synchronised - perfect timing is even more important than usual in WFS systems.
Question 2 -
Does windows still only support 254 channels ?
Question 3 :
Can anyone think of a cheaper way of doing this:

RME ADI 648 MADI Breakout MADI to ADAT 4 * £ 1,749.00
RME HDSPe MADI FX £1099
32* behringer ADA8000 ADAT converters : £4800

Total £12,966

[Justice C. Bigler]

...I do not need a desk - or even inputs. ...

Question 1
anyone know how to do a 256 channel system

The Meyer D-Mitri DCM-4 will do 288 busses. I'm guessing you are wanting to do playback from a computer. You'll have to use the Cue Station to achieve this, along with some other proprietary parts of the system that go along with it. Not cheap, not easy, but absolutely configurable to whatever you want it to do.

The good news is that it will interface with Meyer's Constellation system with the D-Mitri V-RAS module.

[ThomasA(lbenberger)]

You might want to contact the University of Vienna/Austria as they are currently working on a wavefield synthesis project such as this.

ike (at) mdw.ac.at

[Chris Johnson [UK]]

OK,

So I would use SSL MadiXtreme cards. They do a 128 channel card (2 madi interfaces for 64ch in each direction) and their driver package supports multiple cards.
The SSL cards are typically cheaper than RME, and will be fine for this application. They basically just don't do onboard DSP mixing, but I suspect this isnt an issue for you.

Then, instead of Madi-adat and adat-analog, get some Directout Andiamo converters. they are 32ch madi to analog converters. So just 8 of those.

[ProSoundWeb Community]