This is exactly what I built for Robert 2 years ago. I think I know
what Larry is after, I'll tinker a bit...
Scott
/∗∗/
On Sun, 12 Sep 2004, Scott Juskiw wrote:
> I don't mean to step on Larry's parade here, but I think this can
> already be done with an Oakley Multimix and a bit of elbow grease. I
> modified my Multimixes so that they can provide a variable DC bias to
> any of the 3 outputs (-5V to +5V) if nothing is plugged into the
> input. I also used Larry's normalising scheme so that the three
> Multimix channels are cascaded. This allows the bias to go right to
> the 13V limits of the op amps, if you need that much offset. Adding a
> DC bias to the reversing attenuator function of the Multimix provides
> quite a variety of CV scaling and biasing. It's great for turning
> those +/- LFO signals into + only signals (and inverting them at the
> same time). Plus, there's already panels and boards for the Multimix.
>
> Details here:
>
> http://www.tellun.com/motm/mods/oms902/oms902.html