Dual VCO

The module contains 2x MFOS VCO circuit boards plus my own design daughterboard that adds:

-2x CV summing mixers for the PWM

-2x sawtooth doubler circuits

-2x sub octave square wave circuits

So each side's outputs are:

-Triangle

-Sine

-Sawtooth

-Sawtooth Octave Up

-Square/Pulse with PWM

-Square Octave Down

Each VCO's CV inputs can be independent or ganged together by using the jacks in the middle.

For instance, the middle two EXP CV inputs feed BOTH VCO's freq. inputs.

Here's a shot of the daughterboard. The trims are for calibrating the sawtooth doubler circuits.