Mackie Thump18Sv4 18-inch 1400W Powered Subwoofer

The Thump18Sv4 is the 18-inch subwoofer in Mackie's V4 line, pairing 1400W of Class-D power with 132 dB max SPL and low-frequency output to 33 Hz. The larger woofer moves more air for clubs, larger venues, and bass-forward events.

Four selectable high-pass crossover modes - matched to Thump 12, Thump 15, Thump GO, or Variable - plus a 1.4 ms alignment delay, phase-invert switch, and stereo/mono summing keep it phase-aligned with the tops. At 70.4 lb with pole-through mounting, it anchors a stacked full-range PA.