[sdiy] VCA mixer ?

[Paul Perry]

At 05:49 AM 29/09/03 +0700, Merlin Zener wrote:

>I was thinking of having a 16 input, 8 output mixer for my keyboard rig,
>and having no knobs on it, just make it in a 1RU box with a MIDI in and
>set up a panel in Cakewalk to control it.
>
>Obviously the first consideration would be the 128 VCAs - 

In practice, I can't imagine one would be using ALL the VCAs simultaneously.
In which case, you could have a switching arrangement assigning VCAs,
which should be cheaper, even at the cost of greater complexity.

In any case, I would be thinking vactrols, because
1. the noise isn't bad,
2. low complexity
3. easily drive digitally, the CDS element smooths out the ultrasonic
PWM control signals sent to the diodes.
4. and audio crosspoint switches to do the assigning.

paul perry Melbourne Australia