[sdiy] Polymoog Polycom chip block diagram?

Michael E Caloroso mec.forumreader at gmail.com
Sat Feb 19 07:55:58 CET 2022

It is a VCF, and its CVs come from fixed voltage dividers when a preset of


On Fri, Feb 18, 2022 at 10:52 AM Ingo Debus via Synth-diy <
synth-diy at synth-diy.org> wrote:

> Am 18.02.2022 um 06:20 schrieb Michael E Caloroso via Synth-diy <
> synth-diy at synth-diy.org>:
> the VCF has zero resonance capability, zero modulation (no EG, no LFO, no
> key tracking, no velocity), and its cutoff is varied by fixed resistors per
> preset.  It is merely a "brightness" filter.
> So, is it a VCF at all? If so, where does the control voltage come from?
> Ingo
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