[sdiy] Korg 35 chip

[David G. Dixon]

> It's the world's dirtiest Sallen & Key low pass filter design - I can't
> believe how noisy the filter resonance gets on this thing.
> 
> I had the opportunity to play with a later OTA-based MS-20 today - the
> gulf between the two filter designs is enormous!

Which one do you prefer?

Now that I've finished my 2164 4P LPF (panelizing it tonight!), I'm thinking
that my next project will be a clone of the later MS-20 HP-LP filter, only
with 2164 VCAs (and, thus, no expo converter) instead of OTAs.

I might do something with the older MS-20 filter, but I haven't decided.