{"product_id":"mb-quart-mbeq7b-half-din-7-band-car-audio-equalizer","title":"MB Quart MBEQ7B Half-DIN 7-Band Car Audio Equalizer","description":"\u003cp\u003eThe MB Quart MBEQ7B is a half-DIN, 7-band car audio equalizer and preamp processor designed to add hands-on tone control to an amplified vehicle audio system. It provides a central point for adjusting overall volume, front-to-rear balance, subwoofer level, and key frequency ranges. This makes it useful when a source unit does not offer enough sound-shaping control or when additional signal management is needed.\u003c\/p\u003e\u003cp\u003eIts seven adjustable EQ bands cover bass, midrange, and treble regions from 50Hz through 16kHz. Each band offers up to 12dB of boost or cut, allowing targeted correction for a system, vehicle cabin, or listening preference. The result is a practical way to refine tonal balance without replacing the head unit.\u003c\/p\u003e\u003cp\u003eThe MBEQ7B uses a 9-volt preamp line-driver circuit to send a strong signal through its RCA outputs. It is specified with a 10Hz to 20kHz frequency response and a signal-to-noise ratio greater than 99dB. Front, rear, and subwoofer output sections support systems using separate amplifiers for cabin speakers and bass.\u003c\/p\u003e\u003cp\u003eMultiple source connections make this processor suitable for both aftermarket and factory-radio upgrades. It accepts RCA source input, high-level speaker input, and a front-panel 3.5mm auxiliary input for a compatible portable media device. An input selector and level controls help match source levels before the signal is sent to the equalizer and outputs.\u003c\/p\u003e\u003cp\u003eFor bass integration, the MBEQ7B includes selectable subwoofer low-pass frequencies at 60Hz, 80Hz, or 120Hz. Its front and rear channels use selectable 12dB-per-octave high-pass crossover filtering, while the subwoofer output uses low-pass filtering. This arrangement fits well between a source unit and external amplifiers in a multi-speaker car audio installation.\u003c\/p\u003e\u003ch3\u003eKey Features\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeven-Band Equalizer:\u003c\/strong\u003e Adjusts seven key frequency areas for more precise tonal tuning.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e9-Volt Line Driver:\u003c\/strong\u003e Sends a high-level preamp signal through the RCA outputs.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSelectable Subwoofer Crossover:\u003c\/strong\u003e Offers 60Hz, 80Hz, and 120Hz low-pass choices.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMultiple Audio Inputs:\u003c\/strong\u003e Supports RCA, speaker-level, and front 3.5mm auxiliary sources.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFront\/Rear\/Sub Outputs:\u003c\/strong\u003e Feeds separate amplifiers for front, rear, and subwoofer channels.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHalf-DIN Chassis:\u003c\/strong\u003e Saves dash space while keeping controls within reach.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eDesign \u0026amp; Installation\u003c\/h3\u003e\u003cp\u003eThe MBEQ7B uses a compact half-DIN chassis with a front-panel volume\/fader control, dedicated subwoofer level control, individual EQ controls, and selectable LED illumination. Its layout places sound-adjustment functions at the dash while keeping signal and power connections at the rear. Mounting brackets and hardware are included for under-dash or in-dash placement.\u003c\/p\u003e\u003cp\u003eInstall the unit between the source and external amplifier inputs, using the RCA input for a line-level source or the high-level input for speaker-level factory-radio signals. Connect the front, rear, and subwoofer RCA outputs to their corresponding amplifier channels, then select the subwoofer crossover frequency and set input levels carefully. The unit requires +12V power, chassis ground, remote turn-on, and a recommended 2A inline fuse.\u003c\/p\u003e","brand":"MB Quart","offers":[{"title":"Default Title","offer_id":45633161691206,"sku":"MBEQ7B","price":97.2,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0048\/4163\/5910\/files\/71D9C4yrlxL.jpg?v=1784407145","url":"https:\/\/audiowatt.store\/products\/mb-quart-mbeq7b-half-din-7-band-car-audio-equalizer","provider":"Audio Watt Store","version":"1.0","type":"link"}