The RW-12d shakes things up by employing a 12-inch front-firing Cerametallic(TM) woofer and a 340-watt RMS amplifier. Exclusive Corner Port(TM) Technology allows the subwoofer's port tube to be as long as possible without bending, minimizing turbulence that can cause port noise and distortion. It also allows the enclosure to be tuned to a lower frequency than would otherwise be possible to create deeper bass from a smaller cabinet. Another important element is a corner-shaped flange at the port's internal opening, which amplifies the benefits of a longer port. For quick and easy adjustment of all functions, the RW-12d features the DCS digital user-interface that includes three equalization modes (flat, depth and punch) and three user-adjustable presets (music, movie and night) to create specific listening preferences. Available in a black woodgrain vinyl finish, this extraordinary subwoofer also comes with an IR sensor for operation from any learning remote or control system.