On Jun 28, 2009, at 1:48 PM, Derek Holzer wrote: > MS-50 VCA schematic, BTW: > > http://machines.hyperreal.org/manufacturers/Korg/MS-synths/schematics/ms50filt.gif Hmmm... are the diodes in the VCA messed up? Maybe I'm misreading something. That's a rather interesting schematic overall. The filter is like the Yamaha GX-1 filter. - Aaron