"http://www.amazon.com/gp/product/B0049FGP7O?tag=httpadvance00-20
Acoustic suspension - system use the trapped air to control and damp the speaker movement like shocks on a car
Compact size - Only 112 cube yet has more output thanany 8 subwoofer weve ever made
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
DSP - The DSP controls the equalization compressor low pass and high pass filter functions
High-pass crossover on speaker level input lets stereo users enjoy bass management which reduces distortion and belnds sub and monitors better
NHT Super 8 110-Watt Powered Subwoofer (Gloss Black Single)"