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Amplified subwoofer system with Linear Array Transducer (LAT) technology * Six 7-inch woofer cones in Ultra Reflex subwoofer box * Alpine PDX 500-watt RMS digital amplifier * Variable low-pass crossover * Bass boost (0-12 dB @ 45 Hz) with wired remote control * Subsonic filter (30 Hz, 24 dB/octave) * Phase switch (0, 180 degrees) * Speaker- and preamp-level inputs * Dimensions: 23-3/8"W x 13-1/4"H x 13-3/8"D
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