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