My amp has remote bass control but I dont have the control module. The remote bass port on my amp looks like a standard telephone jack. Is there anyway I can make one with a telephone cord and some sort of knob?
Without knowing what each wire does, I wouldn't risk it. If it's an amp you don't value, then experiment. All it is mainly a variable resistor. Depending on the amp design, some will use more electronic components like diode/IC chip.