[sdiy] Serge VCA, was LT1228 / 13700 for VCA

[Ken Stone]

>No, I don't think Serge used this.

Serge didn't use it. If he had tried it he would have immediately abandoned
it. Serge VCAs do not use the LM13600 at all. LM3080, LM3280 and the 4
transistor amp as suggested in the LM394 notes (some say dbx design) were
what he used.

Ken

>Serge made some comments in Electronotes on the LM13600 and CA3280 when these 
>chips were new (!). (I think Ian has posted a link to this article recently.)

Yes he did. it's in the Serge section of my web site.

>> I noticed that on his reviews, the Serge recommended VCA got extremely poor
>> marks.  Does anyone know if this is the design that is actually used in the
>> Serge modulars or just one that was proposed and printed in Electronotes by
>> Serge? Thanks!

No circuit diagram was ever given by Serge - just a "contemplation".

Ken
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Ken Stone   sasami at hotkey.net.au or sasami at cgs.synth.net
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