RoomMatch® RMS215 subwoofer module is designed primarily to extend the low-frequency response of Bose RoomMatch® arrays to 40 Hz. The RMS215 subwoofer module features dual Bose LF15 15-inch high-excursion woofers, with a proprietary port design that minimizes distortion and improves perceived transient impact. The durable Baltic birch enclosure with 2-part polyurethane coating allows reliable ground-stack applications.