hey i got a Boss P126DVC 12-Inch Subwoofer Dual 4ohm Voice Coils 12-inch subwoofer with 2100 watts maximum power handling
Poly injection cone
Dual 4 ohm voice coils for wiring versatility
Frequency Response: 35Hz - 2.2kHz
and an 500 watt amp alpine amp md500 or something like that and it sounds like crap is that the sub or amp?