1. Yes, just scale the input resistor, but don't expect steady tracking.
This filter is all over the place in pitch when it self oscillates.
2. Yes.
3. No, you need three mixers IIRC. One each for LP, BP, HP, Allpass goes
to all mixers. LP, BP and HP inputs go to each individual mixer.
John Loffink
The Microtonal Synthesis Web Site
http://www.microtonal-synthesis.comThe Wavemakers Synthesizer Web Site
http://www.wavemakers-synth.com > -----Original Message-----
> From: synthasaurus [mailto:ixqy@...]
>
>
> Hi all,
> I was thinking of have a 2U Stooge panel made for the CGS Synthacon
> filter. I uploaded a tentative layout (a .jpg) in the files section of
> this list's Yahoogroups (now LaunchGroups?) webpage:
>
> http://launch.groups.yahoo.com/group/ModularSynthPanels/files
>
> or the short, direct link:
> http://tinyurl.com/28tlm
>
>
> I was talking to Larry Hendry about some adding some features that I
> saw on other Synthcon VCF panel designs. Can anyone help with the
> following questions, please?
>
> 1. Can a 1v/oct input be implemented without too much trouble?
>
> 2. Could a second FM Input be added by using a second 220 ohm resistor
> tied to the base of the 2n2222?
>
> 3. Could an All Pass input jack be added by using three extra 47K
> resistors tied to the LP/BP/HP inputs and a pot?
>
>
> Thanks in advance for any help. I'm hoping these features will be
> easy to add on, so that others might want to order a Stooge panel.
>
> The ever-so technically challenged,
> Andrew Sanchez
>
>