More on Amazon.com : http://www.amazon.com/gp/product/B005RF2QOG?tag=purrfectcatdi-20
OSD Audio PS10 10-inch High Powered 120-Watt Premium Home Theatre Subwoofer Black
Large Front-Firing 10 reinforced woofer for excellent bass response Dual front-firing ports designed to produce extended low-frequency response 120 Watts RMS Power Output Adjustable Gain Control and Variable Crossover Frequency set between 50Hz and 250Hz Includes switched or auto-sensing turn-on options with Power on LED indicator Shipping This item does not ship outside the US