MB Quart RA1-750.1 Reference Series mono subwoofer amplifier — 750 watts RMS x 1 at 1 ohm BMW direct fit replacing the factory sub with

replacing the factory sub with the sound you expect from Alpine

Alpine crafted their HDZ-65CS 6-1/2" 2-way component speaker system for listeners in search of excellent audio quality in the car

Wi-Fi Certified Miracast™ for wireless screen-mirroring of select Android devices

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2-way car speakers

MB Quart RA1-750.1 Reference Series mono subwoofer amplifier — 750 watts RMS x 1 at 1 ohm BMW direct fit replacing the factory sub withProduct info: mono subwoofer amplifier 300 watts RMS x 1 at 4 ohms 500 watts RMS x 1 at 2 ohms 750 watts RMS x 1 at 1 ohm variable low pass filter (50 250 Hz, 12 dB octave) variable bass boost (0 12 dB at 45 Hz) switchable subsonic filter (Off 25 Hz, 12 dB octave) wired remote bass level control included More info: preamp and speaker level inputs speaker wire to RCA adapters required for speaker level input DC offset sensing turn on with speaker level