Single 10 175 Watt RMS Amplified Downfiring Enclosure. Computer Optimized 10 Thin Subwoofer Enclosure. Custom Injected Molded Cone. Large Roll Rubber Surround. 2 Vented KSV Voice Coil Former. Perimeter Aero Voice Coil Venting. Poly-carbonate/Glass Fiber Composite Turbine Basket. 1-Channel 275 Watt High Efficiency Class A/B Design. High Level (Speaker)/Low Level RCA input. Soft Delay Turn On/Off Circuit. Auto Turn-on (high level input only). Variable Low Pass Electronic Crossover 50Hz – 200Hz. Protection Circuit: Impedance Over-load, Speaker Short Circuit, Thermal Overheating, and DC Output. Wired Remote Gain Control Included. Down Firing Air Suspension Enclosure.