I'm working on a synthesizer and trying to keep the VCA simple. I'm also trying to avoid LM13700s, partly because I want this to run on one 9V batter.
So I'm trying to make this design work:
My CV is about 2V peak-to-peak, and I've tried it with different center points. The result is quite linear but the problem is that the output volume never goes to zero!
I'm not sure if this circuit is capable of taking volume down all the way to zero. It seems like Q1 would have to have infinite resistance, or act like an open circuit.
Any thoughts? Any mods that would help me get planned silence into this output?