AW: [sdiy] Simple clickless FET mute switch?

[Ullrich Peter]

Hi!

>Thanks guys for the suggestions of Vactrols, VCAs, etc. They surely
>make a good clickless mute, and can double up as a level control as
>well.
>
>However, I'd rather use 32 cheap FETs than 32 VCAs or 32 Vactrols,
>that's why I'm still looking for such a solution. :-)

I understand you fully. Muting a lot of channels can be quite expensive.
Years ago I designed a 48 channel mute circuit for a studio that used BSS198 FETs
as muting devices. If I remeber correctly we controlled the 48 Gates via two
82C55 port extenders and a simple RC combinatin for smothing the edges.
We added the muting FETs directly in the mixer - I think after the Fader.
Worked perfectly.

Ciao
Peter

http://www.ullrich.at.tt