[sdiy] Synthex Oscillator

[paula at synth.net]

> Chamberlin's analog side is a bit
> weird, using a 2040 as an anti-aliasing filter, and then using a pair
> of CA3080s as an SVF. That's probably not a design choice we'd make
> these days!

Not really.
For the anti-aliasing filter you want as steep a slope as you can get, 
with the 2040 you can get a 24dB/Oct slope, a SVF typically has 12dB.
Also the two sound very different and perhaps he just preferred the 
sound of the SVF?

That said, lots of instruments used SSM/CEM chips for anti-aliasing in 
the 80s, the fairlight being one of the more notable.

Paula