The Reference R-12SW subwoofer uncovers what you've been missing in your music, movies and games -- clean chest-thumping bass. The high performance subwoofer provides deep bass and placement flexibility thanks to its front firing driver and all digital amplifier.That Quiver You Feel Is Love. And Bass.The R-12SW features a 12-inch copper-spun Img driver that provides remarkably low frequency response with minimal cone breakup and distortion. The built-in all-digital amplifier delivers ample power with high efficiency and true-to-source accuracy in reproduction. The low pass crossover and phase control allows you to blend the subwoofer's low-frequency tones with other Klipsch speakers as well as establish the ideal level of bass.The R-12SW is housed in a durable Mdf cabinet and finished with a brushed black polymer veneer. The front-mounted Led power indicator lets you know when the system is powered on or off. You've been warned.