Fick ett svar av säljaren:
You can easily replace the rotary switch with variable potentiometer. You can just put a potentiometer instead of the resistors of the pitch (or speed) potentiometer of the NJD Siren. You have to buy a dual gang (two way) potentiometer of 250kohm value.
Fortfarande svårt veta var jag ska löda fast den . Men svaret kanske bidrar med något...
Rolig site soundbrigade!
