balanced tube VCA

[Theo]

For what its worth, looks to me like you need to match.
In general, you can go without matching if the operating points are set
using individual feedback for each tube.
This seems not to be the case here.
On the other hand it will work, even if the two parts are a little
unballanced.

Cheers, Theo


----- Original Message -----
From: Paul Perry <pfperry at melbpc.org.au>
To: Synth DIY <synth-diy at node12b53.a2000.nl>
Sent: Saturday, June 17, 2000 5:18 PM
Subject: balanced tube VCA


> Looking at a tube VCA from Rene, at
> http://www.uni-bonn.de/~uzs159/vtvca.html
>
> Can anyone comment on how important it is to match the
> tubes? It reminds me of a valve compressor from the
> early 60s, wher it was said to be quite critical to
> match the tubes somehow....
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