chang's version has a four channel voltage adder. I've made a few more like
this since. Each attenuator is bi-directional (also inverts the input) and
it mixes with the bank output through an opamp summer, so the secondary
input acts as an offset to the bank output.

I wouldn't so it with just a passive (resistor) summer). i've jotted down
something quick - this should do it. the one i did for him is a bit more
complex, with internal trimpots to assure zero in the center of the pot
travel.

- P

vtl5c3 wrote:

> Quick and hopefully simple question,
>
> If I want to wire up two CV outputs per bank, like Gary Chang's Milton, do I
> need to do
> anything special? I was thinking I would just add a second 1K resistor to the
> junction of
> the 430K and 330 ohm resistors at the output of U1. That sound like it would
> work?
>
> Thanks,
>
> Romeo
>
>
>
>
>
>
>
> Yahoo! Groups Links
>
>
>
>
>
>