Pyle PLBASS8 8-Inch Super Slim Active Subwoofer Low-profile subwoofer system for under-seat installations RCA low-level input High-level input Green & red LED power-status indicator Phase-shift switch: 0 or 180 8'' Low Profile Subwoofer System Suitable for Under-seat Installations. Low Level RCA Input - Phase Shift Switch: 0 or 180&#730; - Thermal, and Overload Protection Circuits - Weight 10.5 Lbs High Level Speaker Line Input - Adjustable Input Sensitivity: 0.2V-3V - Fuse: 2 x 15A Green LED Power Status Indicator - 0 to +12dB Variable Bass Boost (@45Hz) - Max Power: 600 Watt Red LED Protection Status Indicator - Low Pass Filter (50-150 Hz) - RMS Power: 300 Watt Remote Bass Boost Level Control - Remote Turn-On Soft Start/Stop Delay - Dimension: 14. 5''(D) x 9.5''(W) x 3''(H)