The SA-CS9M2 active subwoofer delivers deep, powerful bass with a 10 in. reinforced driver and bass reflex enclosure. Designed for tight, accurate low frequencies with minimal vibration, it enhances movies and music alike. Premium components and a compact design make it an ideal match for Sony AV receivers and CS series speakers. | Sony | | SACS9M2 Active Subwoofer | Black | Best Buy