EDIT: The mod I’m discussing might already be a feature of the module as-is. I can’t quite tell if the external CV inputs affect the rate of the internal LFO or if they directly control the phasing effect. I might delete this post if it turns out to be utter bone-headery.
I’ in the process of building two Music from Outer Space phaser modules:
and I plan to link them into a stereo effect. I’m sure it’ll sound sick for both internal LFOs to be running slightly out of phase with each other, but I’d like to be able to bypass the internal LFOs with an external control voltage, to make the phasing modulation controllably by different wave shapes, envelopes, S&H, etc. I’ve never really heard a phaser modulated that way and I think it would be sick as heck. I’m trying to examine the schematic to identify where to inject the external control voltage, can any of you lend some insight?
From what I can tell, I think I need to take the collector of Q2 and run it to a switch so that the connection can be broken and replaced by the external CV. Does that seem right? Should I add any other active circuitry before the incoming CV signal, or do y’all think it can just go straight in? Here’s the schematic:
Thanks for any insight you can lend! I plan on adding a dual buffered attenuverter ahead of the external CV in, which I think will make for a very unique stereo effect.