I built two of these so far. I put opamp buffers on each input
(LP,BP,HP) and a Vref for the freq pot. On mine, 8 volts opens the
filter completely. I set the ref for 8 volts and that extended the pot
range considerably.
peng
(LP,BP,HP) and a Vref for the freq pot. On mine, 8 volts opens the
filter completely. I set the ref for 8 volts and that extended the pot
range considerably.
peng
--- In cgs_synth@yahoogroups.com, "schabtach" <adam@s...> wrote:
> Understood. For starters I'm going to take out the FREQ control stuff
> altogether and feed a variable voltage through the 220K resistor, so
> that I can determine the effective CV range for varying the filter
> from 20Hz to 20kHz (more or less). Then I can build the necessary
> voltage scaling into the new CV mixer so that it plays nicely with my
> MOTM modules.
>
> This is a really cool-sounding filter! The effects it can create by
> feeding it two or three different signals are just wild.
>
> --Adam