Originally Posted by rayp4993
so i need to replace the potentiometer?
Have you fixed your terminal set screws yet? As for your gain, after the initial setting, you should not have to keep adjusting it. Just because you are missing a knob doesn't mean that the potentiometer is bad. A quick check would be to turn the gain all the way down. If the volume goes down and stays down, then turn the gain up. If the volume goes up and stays up, you do not have a bad potentiometer.