Kube 15 MIE15 inch front firing active subwoofer Kube 15 MIE, the largest model in the Kube range, is engineered to provide the deepest bass for music and movies, giving you a ground shaking immersion. Perfectly suited for large rooms, the 15 inch driver and 300W (RMS) Class D amplifier combine to deliver the most visceral bass performance. With Music Integrity Engine, the Kube 15 MIE is optimised to deliver exceptional depth and dynamics.