[sdiy] VCF caps in modern synths

[Tom Wiltshire]

> On 8 Jan 2021, at 16:02, ColinMuirDorward <colindorward at gmail.com> wrote:
> 
> Yesterday I did some very non-scientific testing of 3320 4pole BPF built using C0G vs polypropylenes. The test may have been more about the tolerances of the caps rather than the dielectric, since my polys are 2.5% vs the C0Gs at 5%. I noticed that at lower frequencies, the polypropylene version would go into oscillation before the C0G version. Any thoughts on this?

Yes, I think you’re right. That seems more likely to be an effect of the tolerance to me.

Tom

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       Electric Druid
Synth & Stompbox DIY
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