Kicker Pair of 48CWRT124 CompRT Series Shallow-Mount 12" Subwoofer with Dual 4-Ohm Voice Coils Kicker 48CWRT124 CompRT Series shallow-mount 12" subwoofer specially designed UniPlate back plate and solid pole piece serves as a single heat-absorbing unit to provide excellent thermal management custom SoloKon technology and the CompRT’s unique framework. The CompRT 12-inch Subwoofer works best with a sealed enclosure and 500 watts of recommended power. Product Highlights: 12" shallow-mount subwoofer with dual 4-ohm voice coils Injection-molded polypropylene cone Rubber surround Power Handling: 500 watts RMS (1000 watts peak) Frequency response: 25-500 Hz Sensitivity: 85.5 dB Top-mount depth: 3.75" Sealed box volume: 0.55 - 2.0 Cu. Ft. Ported box volume: 1.6 - 2.25 Cu. Ft.