[sdiy] panning vca

[Tom Wiltshire]

Hi Joe,

100K input pots are typical, although with the 200K/100K input resistors, the taper will get somewhat distorted. X and Y would usually be Log (signal inputs) and CV would be Lin, as would the initial control. The DC trimmer could be 100K too, since it's feeding a 1M resistor to provide a touch of offset cancellation.

That resistor below the initial control I have no idea about. You'll have to build it and see.

HTH,
Tom


On 22 Jan 2016, at 21:13, Joe <joe.frey at radioles.com> wrote:

> I am planning on building this single as a panning VCA by Richard
> Curcio.
> 
> http://www.sdiy.org/richardc64/mmvca/index.html
> 
> I can source a CA3080 and since I am only building one I am not worried
> about expense. Here's the thing, I don't know what pot values to use for
> the trimmers and I am definitely thrown by the current controlling DC
> trimmer, though I understand how to wire it. Can anyone take a minute(or
> few) to help me figure them out? Thanks, Joe.
> 
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