2-Channel DX Series Car Amplifier (11DX125.2) 4 ohms: 30 watts x 2 chan 2 ohms: 60 watts x 2 chan Bridged, 4 ohms: 125 watts x 1 chan Total RMS power output: 125 watts x 1 chan Class D Design High efficiency MOSFET power supply LED power and protect indicators Selectable KickEQâ„¢ bass boost (0 or +9 dB at 40 Hz) Mono channel operation Preamp RCA outputs Muting circuit cancels out unwanted noise Fixed high-pass filter (100 Hz, 18 dB/octave) Fixed low-pass filter (80 Hz, 18 dB/octave) Frequency response: 20-20,000 Hz Dimensions: 8-1/4"L x 8-5/16"W x 2-1/4"H 12" Comp Series Subwoofer (10C124) Peak: 300 watts RMS: 150 watts 4-ohm Impedance single voice coil Frequency Response: 27-500 Hz Best-sounding, loudest bass for the buck Super-rigid, injection-molded cone with 360-degree back bracing High-temp coil wire Vented pole piece for heat dissipation Strong steel basket with coil-cooling perimeter venting Ribbed surround for strength at high excursion Durable Spiralead tinsel leads Tough, yellow double-stitching on surround Handy spring-loaded terminals 8AWG Amplifier Power Kit (09DPK8) D-Series Amplifier Power Kit Single Amplifier 8AWG Entry level power kits Direct-Connect installation components Transfer the highest current possible with fewest connections Ultra-clean and super-reliable system Power cable, ground cable, fuse holder, system fuses included