KICKER 43C124 Comp 12" 300 Watt Car Subwoofer+Amplifier+Amp Kit+Sealed Sub Box Comp 12" 300 Watt SVC 4-Ohm Car Audio Subwoofer. Size: 12 inches (30.0 cm). Impedance: 4 ohm SVC. Max Rec Amplifier Power:.....300 Watts Peak....150 Watts RMS. Sensitivity: 88.3 dB 1w/1m. Frequency Response: 27-500 Hz. Mounting Depth: 5-7/8 inches (14.8 cm). Mounting Cutout: 11 inches (27.9 cm) 2 ChannelCar StereoAmplifier. High-Speed MOSFET Power Supply. Studio-Grade Bipolar Output Stage Transistors. Fully Adjustable 12dB / Octave Crossover. Fully Adjustable 12dB Bass Equalizer with Differential Circuitry. 2-Ohm Stable Stereo. 4-Ohm Mono Bridgeable. Mute and Delay Soft Start System. Full IC-Controlled Protection Circuitry. RCA Preamp Line Output. ELNA Brand Audiophile Capacitors. 8 Volt Preamp Circuitry. 8 Gauge 2 Channel Car Amplifier Wiring Installation Kit. (1) 17 High Grade Twisted Pair of 100% Copper RCA Cable. 17 8 Gauge Translucent Blue SuperFlex Power Cables. 17 18 Gauge Blue Remote Cable. 17 16 Gauge Clear Speaker Wire. 3 8 Gauge SuperFlex Ground Wire. Gold Plated AGU Heat Resistant Fuse Holder. 60 Amp AGU Gold Plated Fuse. 7 Split Tube Loom Accessories Included: Wire Ties, Ring Terminals, Butt Connectors, Spades, and Grommets. Soft abrasion proof insulating jacket allows for 100% improved flexibility. PVC outer jacket can with-stand an extreme temperature range of -40 to 220 degrees F Single 12 1.1 cu.ft. 5/8 MDF Sealed Subwoofer Enclosure Box. Designed for 12" subwoofers. Machine precision cut mounting holes. 5/8 USA Heavy Duty MDF Construction. Top of the line Glue for extra durable adhesion. High quality speaker terminals. Designed, tested, and engineered to work with most of todays popular woofers. These enclosures are built with the quality additives needed to maximize the performance of any sound system.