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 mid range of your full-range channels. Built to be exceptionally high quality and affordable, new driver designs, enclosure vibration analysis, crossover refinement, and an echoic chamber testing all went into creating an amazing product which brings superior design to the table.