MS 20 Vca

[Massimo Sanna]

Hello Peter

> I was surprised to see how simple the MS 20 Vca is. 
>I know how the original
> performs, but wanted to ask if you are happy with your version? 

I have tried the Maxx' VCA (CA3080+TL072) before.  Thanks to Tomg it works
well, but there is a certain "hiss" that is not what I expect from a musical
instrument ;-)
Then I pointed my attention to Korg's project: half a 4558 and 2 transistors
to realize a less noisy VCA (take a look to MadMouse VCA section)!
 - it is simple and efficient
 - control voltage must be 0 /+5 V
 - the behavior is  honestly good

    I made a little mod to the original KLM-127, because coupled NPN didn't
want to work properly: 1NPN+1PNP work fine.
 What can I say?  Try different projects, compare the results and let your
taste choose for you: then play until cops knock at your door :-)

      be happy



         Massimo Sanna

     Q-Indie Techno Project
    member of S.U.I.F. group
http://space.tin.it/arte/massanna