[sdiy] Synthacon/Steiner-Parker VCF inputs

[Adam Schabtach]

Oh, no! Don't do that!

Well, okay, do it if you want to, but if you do, you're missing out on half
the fun of that circuit. See, you can plug different signals into the
different inputs and then the filter acts sort of like a frequency-dependent
mixer, where the frequency control varies the blend of the two or three
input signals. It's a unique effect and arguably one of the reasons to have
the filter in your system at all, because frankly there are many
better-sounding filters out there.

Just my $0.02 worth, of course. Also note that I built my filter from the
Catgirl PCB rather than Marc's, and I don't know how they differ. 

--Adam

> -----Original Message-----
> From: synth-diy-bounces at dropmix.xs4all.nl 
> [mailto:synth-diy-bounces at dropmix.xs4all.nl] On Behalf Of Derek Holzer
> Sent: Wednesday, June 24, 2009 10:31 AM
> To: Synth-diy at dropmix.xs4all.nl
> Subject: [sdiy] Synthacon/Steiner-Parker VCF inputs
> 
> I'm using Marc Bareille's PCB for the 
> Synthacon/Steiner-Parker VCF clone. It has separate inputs 
> for the HP, BP and LP inputs and a common output. Since I 
> only intend to use one type of filter at a time, I plan to 
> use a switch to change which part of the filter core the 
> input signal goes to.