[sdiy] Stites' Mutant VCF question

[scottnoanh at peoplepc.com]

Hi Michael,

>
> thanks for the reply. Those resistors were causing me some head
scratching.
> I was wondering about the CV circuit too now that you mention it. Would it
> be more beneficial to use an opamp as a voltage to current converter to
> drive the vactrol LEDs directly?

It certainly would be something worth trying.  The 'sink' idea was to give
it a more (or less) volts/octave response.

> Also, I have a large handful of 2N3819. Do you see any reason I couldn't
use
> them in place of the MPF102?

Like Harry says, I think it would work fine.

> This really is a nice VCF design Scott, I am quite excited about getting
it
> to work and using it.

I'd sure be interested in how it turns out for you.  My breadboards have
been full since I played with it - I need to clear some room out and put it
back on.

Take care,
Scott