Dual Electronics BP1204 12 inch illumiNITE High Performance Studio Enclosed Car Subwoofers with 1,100 Watts of Peak Power INCREASED OUTPUT CAPABILITY  specialized tuned port with computer aided design and 2.5 Voice Coils vastly increases output efficiency for your subwoofers providing you with consistent low sounding bass DIGITALLY OPTIMIZED SUBWOOFERS  are carefully crafted for efficient and accurate bass, providing power handling up to 1100 Watts of Peak Power, 600 Watts RMS at a 4 Ohm impedance and Frequency Range between 30Hz  200Hz CURVED PLEXIGLASS VIEWING WINDOW  illumiNITE design with Brushed Aluminum subwoofer cones create a surreal viewing experience while the Ventilated Control Circuitry System ensures delivering studio quality performance SOUND MDF CONSTRUCTION  and top grade in-line carpet eliminates the vast majority of enclosure movement for streamlined sound quality via both 12 inch subwoofers for unmatched sound superiority on the road 1 YEAR WARRANTY  guaranteed high quality and reliability with hassle-free parts and labor warranty with excellent customer service DIMENSIONS  30 W X 14.4 D X 14.4 H