Cgs synth

With the CV mega mixer, i've noticed the volume of an input effects
the volume of other channels, and also seems to throw off the zero
point of the pots. Anyone encountered this? Is this a trait of simple
unity gain summing amplifier circuits? (I've yet to build one from
scratch).
Thanks, daryl

It should not do so. The purpose of using an op amp as a mixer is to isolate
the channels through the virtual ground (pin 2 of the LM358s are a virtual
ground).

Any variation is likely to be caused by a lack of a good ground connection
between the bottom of the pots and the 0v line of the PCB. Also check the
earth connections of the jacks.

Ken