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. FEATURES2 x 10 in.high-excursion woofers for high-output bass in a compact enclosure. Transducers derived from award-winning Bose F1 portable, powered subwoofer 500 W long-term power handling for high sound output and reliability Low-frequency extension down to 37 Hz for impactful, deep-bass music reinforcement 123 dB maximum continuous SPL, 129 dB peak SPL Exterior-grade plywood enclosure with compact size for installations Install outdoors with an IP55 weather rating, three-layer stainless steel grille, water-resistant coating on woofer cone, industrial polyurea exterior coating, and molded cover to protect inputs U-bracket included for easy mounting to walls or ceilings