This ultra compact line array cabinet is a convertible cardioid Sub; a single-sided box that can be arrayed conventionally or arrayed in back-to-front pairs for true cardioid performance. The Metrix Sub is equipped with two newly designed, powerful 15-inch ND15-L Kevlar Neodymium bass drivers, mounted in a tuned, vented and fully braced cabinet. The Metrix Sub-t features precision-machined, rigging hardware that recesses into the cabinet when not in use and works in conjunction with other AIR system rigging elements to allow for a variety of configurations - attach the subs to the rigging frame and hang the Metrix-t or the Metrix-i (with an EIR adapter) underneath them, or place your subs directly on the floor and ground stack your array on top. For a cost effective solution the Metrix Sub-i comes rigging free.