4049 Hex VCA

[Grant Richter]

Be careful this design has a great deal of control voltage
feedthrough (thumping). It is most suitable for slow moving
control voltages and has feedthrough problems with envelopes.
Best prototype it first and see if it is OK for your application.
(that may be what they meant by noisy)

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>From: "Paul Maddox" <paul.maddox at ndirect.co.uk>
>To: "Synth-DIY" <synth-diy at node12b53.a2000.nl>
>Subject: 4049 Hex VCA
>Date: Tue, Jul 11, 2000, 5:35 AM
>

> Dear all,
>
>
>  Thanks for the help, I now have a copy of the article.
>
>  a few people have said the Paia version was noisy... looking at the article
> it suggests useing a 301 or 748 opamp, these arent the quietest in the
> world.
> I shall try with a TL071/2/4.
>
>   I'll build it as a module for my modular first and test it before putting
> it
> in my polysynth design.
>
>   many thanks
>
>   Paul Maddox
> ________________________________________
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>
>