The Bose Professional AMM108 multipurpose loudspeaker features a passive, coaxial two-way design with a 1.7-inch compression driver, 8-inch low-frequency transducer, and high output: 128 dB peak. Its proprietary Beamwidth Matching Waveguide ensures signature Bose Professional sound quality, delivering consistent frequency response, clarity, and projection across the coverage area - a remarkably powerful audio experience for both performers and audiences. The AMM108 is equally suited for a variety of medium-throw sound reinforcement, monitor, and fill applications in permanent or portable sound systems and offers outstanding vocal clarity and projection. The AMM108 features consistent voicing with Bose Professsional AM array modules and Bose Professional AMU utility loudspeakers. So it's easy to mix and match models from all three lines to create different types of systems.