unplug it - there is a black connector with round pins (like the one used for the trailer hook-up)... to get to it, you need to get to the plastic trim on the right, pull the trim off and it will expose the bottom of the subwoofer, and then just use your fingers to "pinch" the connector latches to unplug it... it will not affect the operation of the amp, or throw any codes - just like it never was even there...