Ground-stack and deployment hardware for constant curvature arrays, currently Martin Audio’s GSRIG1530 sub ground stack bracket for the TORUS T12 series. The grid mounts on any Martin Audio SX subwoofer with an M20 pole mount, fixing through a single-point M20 thumb screw, and carries up to three T12 cabinets (T1215 or T1230) with array aim adjustable between -15 and -30 degrees. The kit comprises the ground stack grid, M10 and M20 handwheels and two fly pins.

Because the coverage of a fixed-splay arc depends entirely on the angles being right, the bracket’s job is keeping array geometry accurate at ground level, whether that is side fills, drum or DJ monitors, or a compact ground-stacked main PA. Inspect load-bearing parts as part of normal pre-show checks, and we can confirm the correct combination for your sub and cabinet stack before you order.