Spun Copper IMG WooferInjection Molded Graphite (IMG) woofers are exceptionally light while being extremely rigid – providing remarkable low frequency response with minimal cone breakup and distortion.Compact DesignCompact cabinet design allows for discrete flexible placement without sacrificing cinematic and detailed low frequencies.All–Digital AmplifierThe built–in all–digital amplifier delivers ample power with high efficiency and true–to–source accuracy in reproduction.Down–Firing DriverThe high performance driver provides deep bass and placement flexibility.Low Pass Crossover and Phase ControlAllows you to blend the subwoofer’s low–frequency tones with other Klipsch speakers as well as establish the ideal level of bass.Line/LFE InputsEnsures compatibility with old and new receivers.MDF Cabinets with Brushed Polymer Veneer FinishContemporary aesthetic with absolute durability that results in a seamless integration into any décor.Front–Mounted LED Power IndicatorLet’s you know when the system is on or off.