[sdiy] Lowest distortion neede for VCA - linearizing the LM13600/13700 & other dual VCAs

[David G Dixon]

But it's not 1/4 of a 2164.  It's 1/2 of a 2164, or two VCAs, if you want it
linearized.

Ultimately, you get two linear VCAs out of either 13700 or 2164.


> ASSI wrote:
> > The I/V conversion you care about is done by the input 
> resistor.  The 
> > OTA produces a matching current to compensate the input 
> current via feedback.
> ...etc...
> 
> Interesting, thanks for clarifying.  Ultimately, the question really
> is: is this really cheaper than 1/4 of an SSM2164 (or CoolAudio V2164
> clone) these days?  Maybe 18 years ago when this circuit was posted.
> Certainly a lot more PCB area (16pin DIP + 8pin DIP + transistor +
> passives) compared to 1/4 of a 2164.
> 
> > (on the road :-)
> 
> Awesome!
> 
> Cheers,
> Neil