i have 2 12" kicker cvrs with like a 450 watt kicker amp, they are plugged up with a converter to the stock stereo system, i bought the less expensive wiring kit and im afraid they dont sound as good because of me doing so. They hit real hard on long deep bass hits but transition wise they suck when it comes to fast changing bass, please tell me what wrong, is it the wiring, or the converter to the stock stereo or is my battery not giving it enough power>