Editorial Review Huge value. High performance. The KICKER CompC Subwoofer pumps out the bass with all the intensity your ears can handle. Perimeter venting keeps the air free-flowing around the motor structure. With a KICKER sub that doesn't overheat, you get high-performance bass that keeps the music pounding. The CompC 12-Inch Subwoofer works best with a sealed or ported enclosure and 300 watts of recommended power. Features: KICKER 44CWCS124 CompC 12" 600 Watt Single 4-Ohm Car Audio Subwoofer Sub CWCS124 Four-Ohm Voice Coil Injection-Molded Polypropylene Cone Perimeter Venting for Thermal Management Ribbed Polyurethane Surround Signature Yellow Surround Stitching High-Strength SpiraleadTM Tinsel Leads Stamped Steel Basket High Temp Voice Coil Spring-Loaded Speaker Terminals Size: 12" (30 cm) Impedance: 4 Ohms SVC Max Rec Amplifier Power: 600 Watts Peak / 300 Watts RMS Sensitivity: 88.3 dB 1w/1m Frequency Response: 27Hz - 500Hz Mounting Depth: 5-3/8" (13.6 cm) Mounting Cutout: 11" (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)