While using my Moog EP-2 or EP-3 pedal, which I purchased two years ago, I have encountered an issue when attempting to control volume swells and crescendos with my Sub Phatty during live performances. Surprisingly, the pedal functions correctly when I listen through headphones; however, once I connect it to an amplifier, it either does not respond at all or triggers the opposite effect, where the volume diminishes when I push the pedal down and increases as I release it.
Could someone kindly assist me in troubleshooting to resolve this issue and ensure proper functionality?
For reference, the pedal is currently plugged into the input vol CV jack on the Sub Phatty, and I have previously used other expression pedals with success, notably a Yamaha pedal that functioned properly.