2) Kicker 43C104 10" 600 Watt Car Subwoofers + Box + 1100W Amplifier + Wire Kit MAX Power Handling: 300 Watts per Sub (600 Watts per PAIR) RMS Power Handling: 150 Watts per Sub (300 Watts per PAIR) Impedance: Single 4 Ohm Sensitivity: 86.2 dB Frequency Response: 30 500 Hz