Bose RoomMatch Speakers are actually Progressive Directivity Array i.e. range of line-array speakers. Designed for the finest performing arts centers, auditoriums, sports arenas, dance clubs and houses of worship. RoomMatch arrays deliver concert-quality sound for live music and speech in permanently installed systems. With 42 full-range array modules, 2 companion subwoofers, and rigging accessories, the RoomMatch modular design allows Progressive Directivity Arrays to be optimized for almost any room size, shape or acoustics. Innovative Bose technologies combine to ensure that concert-quality sound is delivered to every seat in the venue.