For some reason, my Memorymoog Plus is triggering the Low C when I switch to Poly from Mono while holding a note on they keyboard. Any ideas on why this is happening?
Bump.
It happens for every voice, and every keyboard mode. I can’t find anything in the service manual.
How long have you owned the Memorymoog?
Did it just start doing this ?
I never changed modes while holding a note on mine but my guess is that the processor gets a little “confused” when you change modes while holding a note(s). So there maybe a brief “glitch” that triggers the low C.
Sure there is a performance reason to do this but in most cases why ? Modern day synth are just getting to the point where there is a smooth change from sound to sound while holding down notes 
Good luck and have fun.
Hey Bryan, thanks for replying.
When I had the Memorymoog serviced, it didn’t trigger. It started doing so recently. So, to answer your question, no it hasn’t always done this.
So no one’s got any ideas about this? Can someone please try and see if they can reproduce this?
Basically, just set up a patch with a lot of release. Then go into mono mode, and hold down a note and press mono again to switch to poly while holding the note, and see if Low C triggers.