MOTM

[pun alert] Something doesn't sound right about this.

What VCA are you using? The CV input to a VCA should not cause "noise", it's 
just
a volume control. It may be CV feedthrough causing DC offsets.

In the MOTM-190, there are 2 trims (1 per channel) to minimize CV offset. If 
you are using
someone else's, see if there is a corresponding trim.

Or, run the CV out through a MOTM-820 VC lag, with the shape turned to LIN
and the up/down time set at '1'.

Paul S.