The QSC AD-C.SUB is part of the AcousticDesign? Series SUB/SAT loudspeaker line which are ideally suited for background music applications that require refined depth and clarity even at lower volume settings. The AcousticDesign Series offers integrators a premium quality installed sound solution where performance, consistent coverage, and aesthetics are paramount. Specifically designed to maintain a consistent tonal characteristic across the entire family in ceiling, surface, and pendant enclosures, the AcousticDesign Series allows integrators seamless transitions within blended installations. The AcousticDesign Series SUB/SAT loudspeakers have been specifically designed to be mix-and-match capable. Any combination of satellites may be paired with any subwoofer in the SUB/SAT line