Bose Professional MB210 compact subwoofers are designed for background/foreground music and small soundreinforcement systems that require low-frequency extension down to 37 Hz. The MB210 subwoofer features two (2) 10- inch high-excursion woofers, derived from the award-winning Bose Professional F1 subwoofer, in a compact, Baltic-birch plywood enclosure optimized for fixed-installation applications. Featuring outstanding performance to size ratio, the MB210 is designed to complement Bose Professional loudspeaker lines, such as FreeSpace®, Panaray®, and Roomatch® Utility, with additional bass impact.