So what your saying is that your head unit has a dedicated subwoofer output on the back, but it is a single rca connector. i assume you have your amp bridged with a single sub aswell. you should get a splitter and connect it. it will cut down the gain voltage coming from the head unit, but you should still notice a substantial gain from the sub if your head unit has a subwoofer level control. if not, then it will be roughly the same only not crossed over by the head unit again this assumes you have bridged your amp to a single sub.
Apply dirt liberally, rinse and repeat
<<<-click for build
Last edited by intender; 11-16-2012 at 09:19 AM.