The Model A Subwoofer is the only member of the Model A family not anchored by 6.5"bass drivers. With two 10" drivers placed opposite each other on the cabinet, any vibrations induced into the enclosure are cancelled thereby preventing cabinet colouration from distorting the midrange of your full-range channels. Built to be exceptionally high quality and affordable, new driver designs, enclosure vibration analysis, crossover refinement, and anechoic chamber testing all went into creating an amazing product which brings superior design to the table. A "state of the art"audio system involves what some refer to as a "suspension of disbelief". This means the playback system transcends the recorded medium and transports you to a live venue. You forget it's a recording and believe you are there at the live performance. Our goal with the Bryston Model A Subwoofer is to provide our customers with a superior level of "disbelief".