[Gllug] OT: Digital Audio Switch

[Christopher Hunter]

On Tuesday 01 Jun 2004 3:13 pm, Pete Ryland wrote:

> A mixer is just an op-amp in the following configuration:
>
> I1 --R1--+--Ro-+
>
>          |   |\|
>
> I2 --R2--+---|-\___
>
>          | +-|+/
>
> I3 --R3--+ | |/

This configuration will work fine with analogue signals, but the OP asked for 
a switch for digital sources.

Your best bet is probably coax relays in a screened box, perhaps controlled by 
some simple logic for input selection and indication.  You should try to use 
the same connectors and coax cables for the signal paths as are used by the 
source equipment - that way you won't get any discontinuities which can lead 
to all sorts of digital nastiness.

Chris

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