Home › Forums › Products › Stompboxes › Using a BOSS FV500H as an expression pedal with the H9 › Reply To: Using a BOSS FV500H as an expression pedal with the H9 August 24, 2016 at 8:15 am #144185 StSpiderParticipant NVM: I fixed the problem myself by going no/yes/no on the calibration option, then rocking back and forth the pedal, and then locking the calibration. Worked like a charm but I feel like the manual is not very clear about it.
