[sdiy] Philip Gallo Lin/Expo SSM2164 VCA design

[David G. Dixon]

> Quoth David Brown at 10/01/11 07:28...
> > http://www.sdiy.org/philgallo/mgbvca.html  I think. - Dave
> 
> Just looking at the schematic there with the relays - any reason
> analogue switches can't be used?

I've built several dual units based (more or less) on this circuit, and I've
just used an SPDT panel switch.  In my last two versions, I've used a pot
instead to scan between log and linear.  It works beautifully.