[sdiy] Korg MS-50 VCA and VCF

[Aaron Lanterman]

The MS-50 VCA and VCF are based on diode bridges (kind of like the Yamaha GX-1/MOTM-485 filter).

http://www.korganalogue.net/korgms/schematics/MS50-module-schematics.pdf (about four pages in)

They're fairly complicted circuits.

The thing I'm left wondering is... why go with diode bridges??? I believe the MS-50 came out after the MS-20... surely they could have gone with a simple OTA type design?

- Aaron