MOTM

On Tue, 25 May 1999 JWBarlow@... wrote:
> >I am against VC-Q in general because it severly degrades CV feedthrough.
> >I
> >may do
> >Thomas Henry's 3320-based LP/All-pass filter with VC-Q. The CEM chips are
> >trimmed
> >by zener-zap to minimize CV feedthrough, and I have access to 12,000 of
> >them!
> 
> Bummer! I figgered there was a reason you'd not mentioned VCQ in the past. 
> VCQ is really powerful though so I'd like to see you look into the 3320 idea 
> -- I've been using some 3320s with their VCQ to great success.

If you really want that VCQ and aren't scared of a soldering iron,
3320-based VCF's are very easy to construct. Just follow the instructions
on the back of the box.. er.. the spec sheet... 

I think VCQ is a nice option, but one not everybody will use. I agree with
Pauls observations about VCQ and c/v feedthrough. (in a pinch you can
create your own feedback loop from the VCF audio output through a VCA and
back into the VCF audio input) 

later
Andrew


-| Andrew Schrock | aschrock@... |-