I have an 02 mustang. I hooked up a 1200 watt boss amp and 2 12" 800 watt pyle subwoofers. I hooked them up to my stock radio and theres barley any bass coming from the subwoofers. When I turn the key back (so the cars not started) it works but theres barley any bass. But when i start the car the subwoofers kind of buzz. Im not sure whats going on.