I got a Vermona Quad Midi Interface and had already 3 RS-95 VCOs – so I bought a fourth one to have a try at modular polyphony. Luckily, I had a few quad modules: the Doepfer A-143-1 (Quad) Complex Envelope Generator/LFO which contains 4 AR envelopes, the Doepfer A-138m Matrix Mixer and 4ms CVA Matrix, and finally a QMMG which contains 4 identical low/hi pass gates. Some sound impressions in the video. Don't mind the duff notes and unstructured improvisations here and there, and the VCO tracking which is not the same for all 4 RS-95s. But then, the last is part of the charms of analogue modular polyphony. The 4 channels of the QMMG are also not really identical anyway.
I like the sound of it ! The QMMG is a bit rough at times with high resonance, and I would prefer 4 ADSR envelopes (an A-143-2 maybe). And of course 4 note polyphony is not really impressive, but it will give me some nice pads out of the modular.
The final patch was:
Midi-keyboard > Vermona Quad Midi Interface
Gate Out > Doepfer A-143-1 (Quad) Complex Envelope Generator/LFO > Doepfer A-138m Matrix Mixer [to be able to determine the amount of envelope on the low-pass gates] > Make Noise QMMG CV (Frequency) Inputs
1 V/Oct Out > 4x Analogue Systems RS-95 VCO > Saw or Pulse Out > QMMG Audio Inputs > 4ms CVA Matrix [to avoid overloading the Azimuth and to do the placement of the 4 voices in the stereo field – I didn't seem to put much in the centre of the stereofield however] > Intellijel Azimuth II [these last two not really needed, I could just as wel have fed the 4 channels into the mixing desk directly]
Some LFOs to the Pulse Width CV inputs of the RS-95s. The RS-95 are really nice sounding VCOs by the way. No effects, and still sounding nice and full - the polyphonic modular does not sound bad at all imho ...