More on Amazon.com : http://www.amazon.com/gp/product/B0049SPA9K?tag=purrfectcatdi-20 <br /> <br />NHT B-10d 300-Watt Powered Subwoofer with DSP (Piano Gloss Black Single) <br /> <br />Acoustic suspension - system use the trapped air to control and damp the speaker movement like shocks on a car <br />Compact size - Only 126 cube yet has more output than its predessor <br />PWM Amplifier - a really smart efficient power plant design is crazy efficient up to 80 so you get to rock out and stay green at the same time <br />DSP - The DSP controls the equalization compressor low pass and high pass filter functions <br />Wireless sub option uses USB input for both power and signal input - no jumpers needed
