Uploaded February 2022 | Updated September 2026, 2 weeks ago

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This is a response to a post on ModWiggler about using the Doepfer
A-102 diode VCF as an oscillator.

modwiggler.com/forum/viewtopic.php?t=259082

It has an unusual resonance behavior, and starts self-oscillating very soon after you start turning the knob clockwise.

I haven't really bothered with using VCFs as VCOs because, well, I have VCOs. But some of the sound demos on the MW thread were interesting, so here we are.

This is just 15 minutes of me exploring that setup. I also try the same thing on a Doepfer A-120 VCF to see how they compare.

Sequencer: Stochastic IG. Envelope: Zadar

00:00 Intro
00:20 A-102
06:15 Slow, big envelope
08:50 A-120
11:15 A-102 again