{"product_id":"memphis-mjp800-4-4-channel-car-amplifier","title":"Memphis MJP800.4 4-Channel Car Amplifier","description":"\u003cp\u003eThe Memphis MJP800.4 is a four-channel car amplifier designed to add substantial, controllable power to a vehicle speaker system. It delivers 125 watts RMS to each of four channels at 4 ohms or 200 watts RMS per channel at 2 ohms. This makes it a practical choice for powering front and rear speakers, component systems, or other full-range speaker arrangements.\u003c\/p\u003e\u003cp\u003eFor systems that need higher output from fewer channels, the MJP800.4 can be bridged to provide 400 watts RMS x 2 at 4 ohms. Its stereo channels are stable down to 2 ohms, while bridged operation requires a 4-ohm or higher load. This flexibility lets installers configure the amplifier around compatible speakers and the system's power goals.\u003c\/p\u003e\u003cp\u003eThe amplifier uses variable high-pass and low-pass crossovers to help direct appropriate frequencies to connected speakers. Each crossover adjusts from 50Hz to 250Hz with a 12dB-per-octave Butterworth slope. Independent front and rear crossover controls support different setup needs across the vehicle.\u003c\/p\u003e\u003cp\u003eA selectable three-position EQ boost provides 0dB, +6dB, or +12dB settings for tonal adjustment. The amplifier's 10Hz to 25kHz frequency response supports full-range audio use, while its rated THD is below 1%. Gain controls help match the amplifier to the output level of the connected source unit.\u003c\/p\u003e\u003cp\u003eThe MJP800.4 accepts both low-level and high-level source signals, making it suitable for many aftermarket and factory-radio integration projects. Its compact extruded-aluminum heatsink chassis is intended for installations where ventilation and efficient use of space matter. It fits naturally into a speaker-focused upgrade path when more output and crossover control are needed than a head unit can provide.\u003c\/p\u003e\u003ch3\u003eKey Features\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eFour-Channel Output:\u003c\/strong\u003e Powers four speakers with up to 200 watts RMS per channel at 2 ohms.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBridged Capability:\u003c\/strong\u003e Combines channel pairs for 400 watts RMS x 2 at 4 ohms.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVariable Crossovers:\u003c\/strong\u003e High-pass and low-pass filters help tailor speaker frequency ranges.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e12dB Butterworth Slopes:\u003c\/strong\u003e Provides controlled frequency rolloff for speaker protection and system tuning.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSelectable EQ Boost:\u003c\/strong\u003e Offers 0dB, +6dB, and +12dB adjustment positions.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh- and Low-Level Inputs:\u003c\/strong\u003e Supports aftermarket RCA signals and compatible speaker-level integration.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eDesign \u0026amp; Installation\u003c\/h3\u003e\u003cp\u003eThe MJP800.4 is built on an extruded aluminum heatsink chassis with exposed aluminum details and an orange accent strip. Its listed dimensions are 7.5 x 2 x 8.7 inches, supporting placement in many trunk, hatch, behind-seat, or side-panel installations. The heatsink design is intended to help manage operating heat when the amplifier is mounted with adequate airflow.\u003c\/p\u003e\u003cp\u003eUse a 4-gauge amplifier wiring kit as recommended by Memphis, with the power fuse installed near the battery. Mount the amplifier securely in a ventilated location and avoid mounting it with the fins facing downward. Verify speaker impedance before wiring: use 2 to 8 ohms per stereo channel, or 4 to 8 ohms for each bridged channel pair.\u003c\/p\u003e","brand":"Memphis","offers":[{"title":"Default Title","offer_id":45633183350854,"sku":"MJP800-4","price":399.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0048\/4163\/5910\/files\/71gdtd8TVKL.jpg?v=1784410470","url":"https:\/\/audiowatt.store\/products\/memphis-mjp800-4-4-channel-car-amplifier","provider":"Audio Watt Store","version":"1.0","type":"link"}