So the exp pedal should be around 10 – 25 kohm to work fine. I’ll check the impedance of my old pedal, and eventually change the pot.
I just took a look on the M-Audio web site, they say the pedal has a “polarity switch”, so there should be two different ways of connecting the cables… this is less clear, I’ll begin by setting the right impedance, and I’ll see.
Thanks to everybody.

Hi
I have an old keyboard exp pedal, tried to plug it into the enigma, but it doesn’t work, I guess it’s not the right impedance. Can anybody tell me what impedance is the original EH exp pedal? Can’t even find it on the EH site….