Kicker 51LX12005 is an LX Series 5-channel Class D amplifier combining four full-range channels with a dedicated subwoofer channel for complete system power. Key Performance Features 5-channel Class D amplifier platform Four full-range channels plus one subwoofer channel Includes LX Control Center and LXRC dash remote FIT+ technology accepts low-level and high-level signals up to 40 V SHOCwave2.0 bass restoration on the subwoofer section System Configuration & Flexibility Type: 5-channel system amplifier Application: Full speaker system plus subwoofer system Amplifier Class: Class D Bridging: Full-range channels can be bridged at 4 Ω Power Output RMS @ 4Ω Stereo: 125 W x 4 RMS @ 2Ω Stereo: 175 W x 4 Bridged RMS @ 4Ω: 350 W x 2 Sub Channel RMS @ 1Ω: 700 W Sub Channel RMS @ 2Ω: 550 W Sub Channel RMS @ 4Ω: 300 W Signal Control & Protection Selectable crossover types, slopes, and frequencies Sub channel low-pass crossover and subsonic filter KickEQ+ parametric bass boost on sub channel Gain-match LEDs for setup support Protection monitoring through LX control hardware Installation Notes Use proper power and ground wiring sized for amplifier current demand Mount in a ventilated location with clearance around the chassis Professional installation and gain setup are recommended Technical Specifications Brand: Kicker Series: LX Series Model: 51LX12005 Amplifier Type: 5-channel amplifier Amplifier Class: Class D Frequency Response: Stereo channels 20 Hz – 20 kHz; sub channel 10 Hz – 160 Hz Dimensions: 12-5/8 in. L x 8-7/16 in. W x 2-3/8 in. H Identifiers & Packaging MPN: 51LX12005 UPC: 713034020233 Sold As: Each Included Components: Amplifier, LX Control Center, LXRC dash remote, mounting hardware, documentation Why Buy From MCOR Automotive Authorized retailer for the brands we sell Specialists in car audio, marine audio, and vehicle-specific integration Expert support for amplifier matching, wiring requirements, and clean system setup