Rockville RWS12CA Slim 1200 Watt 12" Amplified Powered Car Subwoofer Enclosure Rockville RWS12CA Slim 1200 Watt 12" Amplified Powered Car Subwoofer Enclosure. 1200 Watts Peak power output. 400 Watts RMS CEA rated. 12" Super Slim Subwoofer. Ultra Stiff Composite Pulp Cone with Kevlar Reinforcement. 3D Molded Acrylic Dust Cap. Expanded & Rolled Steal Basket. High Density Laminated Foam Surround. High Power Strontium Magnet with Ultra Saturated High BL Motor Structure. Vented Core Magnet Motor Structure. 2" High Temperature Aluminum Voice Coil. 8mm Washer & Yoke Plates. 13.6mm Peak-to-Peak X-Max. 70oz. Magnet Motor Structure. Super Slim Sealed MDF Enclosure Design. Aviation Grade Black Tweet Carpet with Embroidered Logo. Black Texture Synthetic Leather Front Panel. Impedance: 4-ohms. Frequency response: 38Hz-500Hz. SPL @ 1w/1m: 96dB. Dimensions: 24" Length x 15" Height 4.37" Top Depth x 6.65" Bottom depth. Built-in 400 Watts RMS CEA Rated / 1200 Watt Mono Block Amplifier. 150mV - 5V Variable Input Level. 24dB Low Pass Crossover Frequency 50Hz-250Hz. Low Level RCA Inputs. High Level Speaker Level Input with Auto Start Music Sense. RJ11 Jack for Dash Mounted Bass Remote.