[sdiy] The best types of capacitors to use when designing a VCF

[ColinMuirDorward]

 ------->Technically, what are the known differences between C0G and
polypropylene caps?

Hopefully someone else can shed light here. The best I could do would
provide silly descriptors like the WIMAs sounded more buttery while the c0g
sounded more crisp. I feel like I can hear that crisp quality in my Spectra
console EQ... but this could be pure fantasy!

-------> I've always wondered in such blind tests to what extent I'm truly
listening to component quality. In many cases component tolerances
(parameter spread) could yield audible differences, e.g. making the cutoff
frequencies in 4 subsequent stages of a VCF much less aligned, softening
the filter response.

Definitely agree here. In my case I chose WIMA vs c0g with the same
tolerance, but I wouldn't have measured each cap so maybe I got lucky and
grabbed two WIMAs of *exactly* the same value, or maybe they were
*perfectly* imbalanced values which spread the poles in a nice way.

--------->Of course distortion may be what you are after of course in
making something ‘sound good’ :-)
Polyester film for ms20 VCF all the way!

On Sun, Sep 25, 2022 at 3:03 AM pata--- via Synth-diy <
synth-diy at synth-diy.org> wrote:

> Hi Logan and the list!
>
> I vote for polypropylene film type in signal circuits.
> It’s robust enough, much better than polystyrene types.
> In addition, but easier than polycarbonate types (although I love
> polycarbonate best).
>
> I use only thru hole type, so I can’t say anything about SMT.
>
> Cheers,
>
> Taku
> Muse Music Synthesizer Lab.
>
> 2022/09/25 7:16、Logan Mitchell Sr via Synth-diy <synth-diy at synth-diy.org
> >のメール:
>
> 
> Hello.
>
> Can anyone tell me what are the best types of capacitors to use when
> designing a VCF ?
>
> Logan
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