{"product_id":"memphis-prx400-1v2-monoblock-subwoofer-amplifier","title":"Memphis PRX400.1V2 Monoblock Subwoofer Amplifier","description":"\u003cp\u003eThe Memphis PRX400.1V2 is a compact monoblock amplifier designed to add dedicated subwoofer power to a car audio system. It delivers 400 watts RMS to one channel at 2 ohms, with additional power ratings for 1-ohm and 4-ohm subwoofer loads. This makes it a practical choice for systems that need controlled low-frequency reinforcement without using a large amplifier chassis.\u003c\/p\u003e\u003cp\u003eIt is intended for listeners building a focused bass section around one subwoofer or a properly wired pair of subwoofers. Its mono configuration concentrates amplifier output on the low-frequency channel instead of powering full-range speakers. The amplifier is stable to 1 ohm, giving installers flexibility when matching compatible subwoofer voice-coil configurations.\u003c\/p\u003e\u003cp\u003eVariable low-pass, subsonic, and bass-boost controls help tailor the subwoofer channel to the rest of the system. The low-pass crossover can reduce upper-bass and midrange content reaching the subwoofer, while the subsonic filter can help manage very low frequencies. A wired remote level control allows convenient adjustment of subwoofer output from the front of the vehicle.\u003c\/p\u003e\u003cp\u003eThe PRX400.1V2 uses an extruded aluminum heatsink and built-in protection circuitry for overload, short-circuit, thermal, and reverse-polarity conditions. Its top-mounted controls sit beneath a removable acrylic panel, keeping adjustments accessible while maintaining a clean installed appearance. Blue LED lighting is integrated into the top cover and undermount area.\u003c\/p\u003e\u003cp\u003eThis amplifier can be used with aftermarket receivers through RCA inputs or integrated into many factory-audio upgrades through its high-level input capability. Stereo RCA outputs can pass signal to an additional amplifier when expanding the system. Memphis recommends its 8GKIT amplifier installation kit for this model.\u003c\/p\u003e\u003ch3\u003eKey Features\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e400W RMS at 2 Ohms:\u003c\/strong\u003e Supplies substantial continuous power for a compatible subwoofer system.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e1-Ohm Stable Mono Design:\u003c\/strong\u003e Supports flexible subwoofer wiring configurations down to a 1-ohm load.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVariable Low-Pass Filter:\u003c\/strong\u003e Adjusts the subwoofer’s upper frequency range from 50Hz to 250Hz.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVariable Subsonic Filter:\u003c\/strong\u003e Helps reduce ultra-low frequencies from 10Hz to 50Hz.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWired Remote Level Control:\u003c\/strong\u003e Lets you adjust subwoofer output level from the driver area.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh-Level Input Capability:\u003c\/strong\u003e Supports integration with many factory radio or OEM amplifier systems.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eDesign \u0026amp; Installation\u003c\/h3\u003e\u003cp\u003eThe PRX400.1V2 has a compact chassis with an extruded aluminum heatsink, platinum-plated connectors, and a removable LED-accented acrylic top panel. Its concealed top-mounted controls provide access to gain, filtering, bass boost, and setup adjustments. Blue top-cover and undermount LED lighting add visual accent illumination after installation.\u003c\/p\u003e\u003cp\u003eMount the amplifier in a dry location with adequate ventilation, such as a trunk, hatch area, or behind a truck seat, and do not mount it with the heatsink fins facing down. Use the recommended 8-gauge amplifier kit, route power wiring through a properly fused connection near the battery, and verify final speaker impedance before connecting the subwoofer. For factory-radio integration, use the high-level input adapters; for aftermarket systems, use the RCA inputs and set gain and crossover controls during system tuning.\u003c\/p\u003e","brand":"Memphis","offers":[{"title":"Default Title","offer_id":45633195835462,"sku":"PRX400-1V2","price":255.06,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0048\/4163\/5910\/files\/51J3RnZVVuL.jpg?v=1784413477","url":"https:\/\/audiowatt.store\/products\/memphis-prx400-1v2-monoblock-subwoofer-amplifier","provider":"Audio Watt Store","version":"1.0","type":"link"}