The SB150zR is a high output, compact subwoofer system. This versatile, all-purpose subwoofer is designed for portable use where the solid-sounding output of a 15 inch driver is desired. The SB150zR works well with most full-range loudspeakers in a variety of applications including: band/club PA, small houses of worship, A/V systems, hotel ballrooms, meeting rooms, classrooms, exhibit areas, f/x reinforcement, cruise ships, DJ monitoring, and drum-fill monitoring.