Onkyo SKS-HT520 6.1 Home Theater Speaker System - Black 6.1 = 2 Front L/R Speakers, 1 Center Speaker, 2 Rear L/R Speakers, 1 Rear Center Speaker, and 1 Subwoofer 2 Front Speakers 2-Way Bass Reflex Nominal Impedance - 8 ohms Max. Power - 100 Watts