(2) Kicker 43C124 Comp 12" Car Subwoofers Totaling 600 Watt with Single Voice Coil The 2016 Comp 12-Inch Subwoofer is a 4-Ohm speaker, made to give you the strong lows you seek every day. This Comp sub features a thick woofer cone, 360-degree back bracing, a strong motor structure and perimeter venting to ensure you get the strong, reliable bass you need. The 2016 Comp Subwoofers give you deep bass and a great value.The Comp 12-Inch Subwoofer works best with a sealed or ported enclosure and 150 watts of recommended power. KICKER 43C124 Comp 12" 300 Watt SVC 4-Ohm Car Audio Subwoofer. Size: 12 inches (30.0 cm). Impedance: 4 ohm SVC. Max Rec Amplifier Power:* ....300 Watts Peak ....150 Watts RMS. Sensitivity: 88.3 dB 1w/1m. Frequency Response: 27-500 Hz. Mounting Depth: 5-7/8 inches (14.8 cm). Mounting Cutout: 11 inches (27.9 cm) Min Sealed Box Vol: 1.25 cu. ft (35.4 L). Max Sealed Box Vol: 3.5 cu. ft (99.1 L). Min Vented Box Vol: 1.75 cu. ft (49.6 L). Max Vented Box Vol: 2.25 cu. ft (63.7 L)