Cgs synth

Hey John...

Thanks for the comments.

My FREQ knob does max out at the halfway point as you turn the
pot. I'm hoping that this mod will help.

I'm going to use the Synthacon with a Moog Voyager and a small
Blacet system(binary zone, dark star chaos, time machine,
miniwave, etc...) Do you have any advise or experience with
these? Anything I can do with the Synthacon VCF.

And by the way... The Synthacon does sound pretty cool at this
point. I know that when I get this one working it will be in use all
the time. I would just bit more control over the FREQ and
Resonance.

Thank you




--- In cgs_synth@yahoogroups.com, "John Loffink"
<jloffink@a...> wrote:

> Yes, just put the 220K resistor from where the wire on the

board is

> connected and wire it to the middle terminal on the freq pot.
>
> What I try to emphasize is that the Steiner VCF circuit is

sensitive to the

> gain of the transistors, which is a highly variable parameter.

You may or

> may not require the modifications depending on your

transistors. I can say

> that several people had similar results to mine before the

modifications,

> with the frequency range knob only useful to the 11 or 12

o'clock position,

> while other people on this list apparently had a fuller control

range and

> didn't need the modifications. The values I ended up with did

correspond

> fairly closely to values I found on a Japanese version of the

schematic.

>
> John Loffink
> The Microtonal Synthesis Web Site
> http://www.microtonal-synthesis.com
> The Wavemakers Synthesizer Web Site
> http://www.wavemakers-synth.com
>
>
> > -----Original Message-----
> > From: earthtodylan2000 [mailto:earthtodylan2000@y...]
> >
> > Ken,
> > My 2nd question is from your Synthacon mod webpage

under...

> >
> > "Notes from John Loffink"
> >
> > Again it's...
> >
> > " I also added 220K of series resistance to the FREQ knob."
> >
> > Do I just put a 220k resistor from wire from the board to the
> > middle terminal of the FREQ pot?
> >
> > I'd just like to understand how to do this.
> >
> > Thanks
> >
> > Dave
> >