Maximum sound pressure level(Max SPL): 140dBspl

MiniSub-21 is a single 21-inch subwoofer. Featured an ultra-long excursion neodymium woofer and dedicated cabinet design, it is close to a single 18-inch subwoofer in size and weight. With monster-like 140dBspl output, it is far more powerful compared to any typical dual-18 subwoofer.

MiniSub-21,MiniRay and MiniRay-SUB, joint together to make a 4-way system. With MiniSub-21 as low extension, MiniRay and MiniRay-SUB can work in higher frequency range, release more dynamic headroom for the full-range system and gain higher output SPL.