Mackie SPM400 Speaker Pole

The SPM400 threads into the M20 mount on a Mackie subwoofer and carries a pole-mountable top box above it, turning a sub and a full-range speaker into one stack with nothing else in the rig. Mackie lists it for the Thump15Sv4, Thump18Sv4, DRM18S, SR18S and ThumpSub GO.

Height is adjustable and locked with a knob on the shaft, so the top box can be set above head height in a crowded room and dropped again for a low ceiling. At 54.7 inches long and 3.5 lb it packs alongside the speakers rather than needing its own case. Mackie's part number is 2051055.