6 to 8 channel audio player w/ amps for art installations?

[Tony Scharf]

One thought I have would be to use ADAT or some hardware Hard disk
multitracker from the last decade.  You would get 8 discrete channels,
and they could be looped.  They could probably be had dirt cheap now
as well, and you could probably easily swap the drives out for SD card
drives.  Almost all of those would have ADAT connections on them which
could be used to distribute the audio around (though you would need
D/A boxes and something to handle the routing (an old MOTU 2408 would
handle it, and could probably be found used for cheap).  Basically,
this would be a sweet pro setup around 2001...but could probably be
cobbled together off the second hand market for significantly less.

Tony


On Mon, Oct 31, 2011 at 8:59 PM, Michael Zacherl. <mubar04 at blauwurf.at> wrote:
>
> On 1.11.2011, at 00:42 , Martin Naef wrote:
>
>> On 31.10.2011 08:53, Michael Zacherl. wrote:
>>> how would you build a 6 to 8-channel audio player with amplifiers in
>>> the 100W rms/channel range?
>>
>> HiFi Amp with discrete analog inputs. 100W might get a bit expensive
>> though - do you really need that much power?
>
> at least for the bass transducers (they weigh about 1.5 kg and need to be moved)
> I'm thinking of a more versatile solution.
> OTOH for this potentially permanent installation something taylored and therefore possibly cheaper would make sense.
>
>>> The set should be reliable and work unattended. I had something in
>>> mind with a small linux-box, 5.1 S/PDIF output, and a digital amp
>>> with S/PDIF input, also to spare the conversion. No idea if there are
>>> parts available to achieve something like that.
>>
>> Keep in mind that S/PDIF will only carry an encoded surround signal, not 6 fully discrete channels.
>
> yeah, thanks for noting - wasn't really aware of that.
> Need to do some further reading.
> My idea was to have a purely digital connection to the amplifiers to avoid noise.
> If this amps are digital it's probably also possible to spare the D/A-A/D conversion.
> At least in theory - if something like that is available, don't know.
>
>> Some encoders are pretty good (DTS), but they cost *money*.
>> Many cheap PCs do include 6 discrete outputs though, so that should be doable.
>
> this is what I found out so far.
> For transducers the quality should be sufficient.
>
>> Otherwise I'd get a USB audio interface - some cheap consumer device shouldn't break the bank.
>
>
> cheers,   m.
>
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