MOTM

I suspect that this oddness is when the '800 is used with GATE only.

It probably has to do with the attack times less than the internal trigger pulse time. I would be
curios what occurs when a Pro-2000 is used with BOTH gate and trigger (you assign an AUX out to
VTRIG).

Also, I can see that if attack is very short (say 0) and decay is long (say 4 or more) when
sustain is at 10 it acts strangely. Think about it: what does this setting mean? How can you
"decay" when the sustain is at max? Where do you "decay" to? I suppose it should just sit at the
sustain setting (~+5V) and wait for GATE to drop, going into the release phase. But it may not.
However, I don't forsee a reason to redesign. It *is* a cheap, simple circuit.

Lastly, it you want just "organ" envelopes, use the MOTM-820 with GATE as you input.

Paul S.