PO Modular Tuning Problem

Hi, I‘m having trouble with the tuning of my PO170. I‘m sending cv from the op-z via the oplab module. And I can‘t get it tuned right. The middle octave is in tune, the higher and lower octaves are out of tune.

Does anyone knows what I‘m doing wrong?


@flom: hopefully I’m some help this time! Have you calibrated the oscillator? There’s a little screw for tuning on the back of the oscillator (you can also calibrate the filter’s cutoff and resonance on the back of that module too).

Hi @5StarNomad , thanks for your reply. I will have a look at the module and the screws tomorrow.

Did anyone used those screws for tuning before?

What does the screws do at the filter module?