[sdiy] How does the JX3P VCA work?

Andre Majorel aym-htnys at teaser.fr
Sat Jan 18 11:22:00 CET 2014

On 2014-01-16 13:35 +1100, Paul Perry wrote:

> Worth noting is that in the JX3P (or the MS20 for that matter) the
> VCA only has to deal with a monophonic signal, so distortion isn't
> such an issue.
> It is the noise, that really limits this circuit, in my opinion.

It took me only three decades to understand that the MS-20 ring
mod can sound good... if you keep the level of VCO2 below 8.

It could be the filter distorting, though. But since the signal
path is hard wired, there's no easy way to find out.

> Certainly, it is a tricky thing to analyse. I couldn't wave my hands
> fast enough..

That cracked me up. :-)

André Majorel http://www.teaser.fr/~amajorel/

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