2) KICKER 43C124 12" 600W Subs + GMC Chevy 07-13 Crew Enclosure + Amp + Wiring MAX Power Handling: 500 Watts (1000 Watt per Pair) RMS Power Handling: 150 Watts Impedance: Single 4 Ohm Sensitivity: 88.3 dB Frequency Response: 27 500 Hz