seeking dual linear concentric pots w/knobs

[jhaible]

> >Don't want to talk you into something, but using a knob
> >for different functions cw and ccw from 12 o clock position
> >is not *that* bad. 
> 
> ....well I agree, it's just the added ckt complexity!

Depends on the complexity of your original circuit.
If you use the pot directly as attenuator, you're right.
If you use the pot to control a VCA (because you want
voltage contol, or for some other reason), the additional
ckt is next to zero. You need a single pnp transistor to
control a 3080 with a positive-only CV anyway, and it's just
a matter of biasing two transistors to make one work from
a certain voltage (coresponding to 12 o clock position) 
upward, and the other obe downward.

JH.