Definitive Technology Pro Cinema Center Speaker Black (Demo)BDSS (Balanced Double Surround System) Drivers: Supports the cone at two points for better stability, longer excursion, and reduced distortion for accurate sound. Pressure Coupled Radiators: Side mounted radiators double the lower midrange area without increasing speaker size, providing richer bass. Poly Stone Enclosures: Dense, acoustically inert material eliminates cabinet resonance for pure sound. Versatile Placement: Built in feet for angling and