The stinger is a secondary battery in my trunk, the amp is the only thing that is shutting off, and the head unit has a adjustment for the subwoofer level and a seperate one for bass and those are both turned up when it is shutting off, the subs are each 1 ohm dual voice coil and they are wired down to 1 ohm which the amp is supposed to put out 1800 watts at 1 ohm