Kicker CX1800.1 1800-Watt Class-D Mono Subwoofer Amplifier. CX1800.1 Mono Amplifier. (not included). See below for more details. Efficient Class-D amplifier. @ 14.4V, 4Ω mono, ≤ 1% THD+N: 900W x 1. @ 14.4V, 2Ω mono, ≤ 1% THD+N: 1800W x 1.
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