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We simply don’t go by any official schematic for expression pedals. Since we don’t manufacture them we just recommend a 10 kohm to 25 kohm linear potentiometer. Keep in mind the EXP ports on the H90 are NOT able to provide expression and footswitch functionality on the same port the way H9 can. You’ll have to output expression to EXP1 and footswitch functionality to EXP2.


Thx. Just for clarity: will CCW-Tip, Wiper-Ring, and CW-Sleeve work fine, or do I need to swap the tip and ring around? I often see the 1k resistor from the wiper in some EXP pedal layouts. Is there any benefit to this, Joe?


Lastly, I have both the 10k linear and 25k linear wah pot. Is there any benefit of using one instead of the other?