[sdiy] ARP Quadra - Gilbert Cells VCAs?!?

[paula at synth.net]

The Monowave also used them :)

On 2018-05-06 19:58, Michael E Caloroso wrote:
> Last night I was browsing the service manual and was amused to find
> that ARP implemented discrete Gilbert Cell Multipliers for the VCAs in
> the Quadra.  Usually they're found in bench measurement tools, this is
> the first time I have seen them used in a synth.
> 
> I can certainly appreciate the decision: with a machine comprising a
> string machine, lead synth, bass synth, and poly synth there is a LOT
> of potential hot signal passing through those VCAs.
> 
> MC
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