$850 Mackie Thump18Sv4 18" Powered Subwoofer 1400W

Updated August 21, 2026

est.MSRP: $850 Condition: NEW- Brand: Mackie Model: Thump18Sv4 ASIN: B0GRHVT42C Mackie Thump18Sv4 is a professional powered subwoofer that adds that extra "oomph" to your PA system, shaking the floorboards with massive bass that gets people on their feet. Thump18Sv4 combines our 1400W Class-D active subwoofer amplifier with a 18" high-performance woofer, for massive 132 dB maximum SPL and 25 Hz low frequency performance. This 15 inch subwoofer is the perfect match for Thumpv4 loudspeakers (or any PA speakers) with selectable crossover modes, plus a "variable" mode for setting the crossover yourself. Stack your Thumpv4 speaker on top of the subwoofer, stack multiple subs on top of each other, or mount your speaker above the sub with the Mackie SPM400 speaker pole (sold separately). Thump18Sv4 is the best subwoofer for gigging DJs and professionals, featuring Built-Like-A-Tank durability, built-in handles and a custom Mackie slip cover (sold separately).

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