[sdiy] DIY Polysynths

[Florian Anwander]

Hello Tom

> these below. Can anyone add anyone else to this list?
It is not yet publishable, but sometimes I am continuing to work on a
four voice expansion for my Korg Monopoly.

Also it won't be completely diy, because I will start with a readymade
CEM-based prototype of a Doepfer A-135-2 (a not yet released product
http://www.doepfer.de/a1352.htm).
The idea is to pick the CV, Gate and  VCO-Signal from the Monopoly and
to handle it outside in a additional four voices. Each voice will
consist of one VCO (CEM3340), VCF, VCA (CEM3372) and two
Tom-Wiltshire-envelopes. No additional LFO at the moment.
The most complex and time consuming task shall be the control panel,
which will provide access to the four individual voices in three
different modes:
1.) one set of controls determines the sound of all four voices
3.) each voice is controlled by its own set of potentiometers/switches
2.) one set of controls determines the sound of all four voices, but the
other potentiometer sets should provide offsets from these master values.

Until now exists the breakout from the Monopoly, one voice on a soldered
breadboard with the VCO and two of your envelopes (plus the existing
VCF/VCA module). It basically works, but now I am lacking much time to
complete it (and also there are always those small (and bigger)
modification ideas and repair jobs, that crop up every now and then.

Florian