Paradigm PDR 8 - subwoofer Excellent condition ....sounds great! Specs Amplification Type active Speaker Driver Diameter 8" Speaker Driver Diameter (metric) 203 mm Nominal Output Power90 Watt Frequency Response 29 - 150 Hz Nominal Impedance 15 KOhm Crossover Frequency 50 - 150Hz Output Features Bass Reflex Audio Amplifier integrated Connectivity Technology wired Recommended Placing floor-standing