{"product_id":"mb-quart-fa2-900-5-5-channel-car-audio-amplifier","title":"MB Quart FA2-900.5 5-Channel Car Audio Amplifier","description":"\u003cp\u003eThe MB Quart FA2-900.5 is a compact five-channel car audio amplifier built to power four full-range speakers and one subwoofer from a single chassis. It is intended for vehicle audio upgrades that need dedicated amplification for the main cabin speakers plus low-frequency support. Its five-channel layout can simplify a system compared with using separate full-range and mono amplifiers.\u003c\/p\u003e\u003cp\u003eChannels 1 through 4 deliver up to 100 watts RMS each at 2 ohms or 50 watts RMS each at 4 ohms. The dedicated fifth channel supplies 200 watts RMS at 4 ohms, 250 watts RMS at 2 ohms, or 500 watts RMS at 1 ohm. Only channel 5 is specified as 1-ohm stable, making correct speaker and subwoofer load matching important.\u003c\/p\u003e\u003cp\u003eThe FA2-900.5 uses MB Quart's Class Q1 Class D topology with FLUID-FETS output devices and a rugged MOSFET pulse-width-modulation power supply. Its Q-Stasis pre-amplifier stage is designed to handle low-voltage source signals with minimal distortion. A heavy-duty heat sink helps move heat away from the amplifier's internal MOSFETs during operation.\u003c\/p\u003e\u003cp\u003eVariable electronic crossovers let the amplifier be configured for separate speaker and subwoofer duties. The high-pass crossover adjusts from 40Hz to 400Hz, while the low-pass crossover adjusts from 40Hz to 300Hz. A 10Hz to 40Hz subsonic filter and 0dB to 12dB bass boost provide additional low-frequency adjustment.\u003c\/p\u003e\u003cp\u003eThis amplifier supports speaker-level audio inputs and uses nickel-plated RCA inputs for low-level connections. DC Signal Sense can automatically turn the amplifier on when it detects a signal at the RCA inputs, reducing the need for a separate remote turn-on lead in compatible installations. A wired bass remote is included for making bass-level adjustments from the driver's seat.\u003c\/p\u003e\u003ch3\u003eKey Features\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eFive-Channel Configuration:\u003c\/strong\u003e Powers four full-range channels and one dedicated subwoofer channel from one amplifier.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e1-Ohm Subwoofer Channel:\u003c\/strong\u003e Channel 5 is rated for 500 watts RMS at 1 ohm.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVariable Electronic Crossovers:\u003c\/strong\u003e Helps route appropriate frequency ranges to speakers and the subwoofer.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDC Signal Sense:\u003c\/strong\u003e Enables automatic turn-on from a detected RCA input signal.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWired Bass Remote:\u003c\/strong\u003e Lets the driver make convenient bass-level adjustments from the listening position.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProtection Diagnostics:\u003c\/strong\u003e Illuminated indicators monitor overload and speaker-short protection conditions.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eDesign \u0026amp; Installation\u003c\/h3\u003e\u003cp\u003eThe FA2-900.5 has a black compact chassis with a heavy-duty heat sink, nickel-plated RCA inputs, and heavy-duty power, ground, and speaker connections. MB Quart specifies a Class D design, FLUID-FETS output devices, and a MOSFET PWM power supply. The amplifier measures 15.0 inches long, 5.82 inches wide, and 2.2 inches high.\u003c\/p\u003e\u003cp\u003eFor installation, use the amplifier with properly matched speaker and subwoofer impedances, keeping the 1-ohm load limited to channel 5. The power and ground terminals accept up to 4 AWG cable, while speaker terminals accept up to 12 AWG cable; MB Quart specifies external 100A fusing. Mount the amplifier to a secure surface with adequate ventilation, then set crossover, subsonic-filter, gain, and bass settings to suit the connected speakers and source unit.\u003c\/p\u003e","brand":"MB Quart","offers":[{"title":"Default Title","offer_id":45633161297990,"sku":"FA2-900-5","price":235.98,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0048\/4163\/5910\/files\/61_jetmPrHL.jpg?v=1784407023","url":"https:\/\/audiowatt.store\/products\/mb-quart-fa2-900-5-5-channel-car-audio-amplifier","provider":"Audio Watt Store","version":"1.0","type":"link"}