Cerwin Vega VPAS12 12" 600W (250W RMS) Shallow Mount Sealed Powered Car Subwoofer with Easy Finance Features: PWM MOSFET Power Supply/Thermal Protection Circuit Adjustable Input Sensitivity Remote Subwoofer Control Included RCA and High-Level Inputs Passive Radiator Design Slim 12" 4 Ohm subwoofer Remote Bass Knob Included Power: 250W RMS @ 4 Ohm @ 100Hz, 600W Max Bass Boost: 0-12dB LPF Filter: 30-150Hz Phase Switch: 0 or 180 degrees Dimensions: 13.6" x 11.1" x 3.15"(L x W x H)