Here's the link to my demos again:
http://www.pugix.com/bottom-cabinet-lower.htm#tubevca
I find a very, very small output being passed when the Gain and CV pots
are at zero. I didn't try adjusting the trimpot, though, and this might
be why a small signal is passed. Initially I set the trimpot by ear.
The CGS-65 really cannot do double duty as a regular VCA for a couple of
reasons. One is that a unity gain response is distorted for much over a
2 volt p-p input. You don't want any distortion for regular VCA use. A
second reason is that the control voltage feeds through significantly.
It thumps when there's an envelope but no input signal.
This demo starts and ends with a MOTM-190 VCA for comparison.
http://www.pugix.com/music/cgs-65-timbral-gate.mp3
<http://www.pugix.com/music/cgs-65-timbral-gate.mp3>
-Richard Brewster
Mark wrote:
http://www.pugix.com/bottom-cabinet-lower.htm#tubevca
I find a very, very small output being passed when the Gain and CV pots
are at zero. I didn't try adjusting the trimpot, though, and this might
be why a small signal is passed. Initially I set the trimpot by ear.
The CGS-65 really cannot do double duty as a regular VCA for a couple of
reasons. One is that a unity gain response is distorted for much over a
2 volt p-p input. You don't want any distortion for regular VCA use. A
second reason is that the control voltage feeds through significantly.
It thumps when there's an envelope but no input signal.
This demo starts and ends with a MOTM-190 VCA for comparison.
http://www.pugix.com/music/cgs-65-timbral-gate.mp3
<http://www.pugix.com/music/cgs-65-timbral-gate.mp3>
-Richard Brewster
Mark wrote:
> I basically have two questions about the CGS65.
>
> Firstly, while I've heard some very nice demos of its waveshaping
> abilities, I am curious how well it performs as a VCA. If the input
> signal is kept below the level at which it distorts, how well does it
> function as a VCA?? How well does it mute an incoming signal if no
> envelope is applied?? Has anyone here used it as a conventional VCA??
>
>
>