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

[Michael Zacherl.]

On 1.11.2011, at 03:15 , Tony Scharf wrote:

> 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.

that's a cool idea.
Behringer have an 8-channel ADAT converter, pretty cheap and quite ok.
(we used it in conjunction with RME gear)

I will browse SOS for multitrackers.

thanks,  m.


> 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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