[sdiy] Filter CV Inputs

[harrybissell]

I'd need to see what you are doing - do you have a schematic of your mod ?

It might be possible to keep the passive attenuator and isolate it with a
diode...
so a more positive voltage will increase the center frequency, but it will not
load the existing circuit otherwise.  You might lose from 0.2V to 0.7V of your
incoming CV, probably not a real issue.

let me know if I can advise

H^) harry

Jim Carlile wrote:

> I've got a jack running to a point in my SH-101 that allows you to pipe in
> CV to control the filter's frequency.  How can I add a depth control to this
> so it isn't running full blast?  I've rigged up a passive attenuator but the
> problem I'm having is the pot still controls the frequency even if nothing
> is plugged into the jack.  Do I need to construct a single channel cv
> 'mixer' using active electronics?
> Jimmy
>
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