10" long-throw, high-excursion woofer delivers powerful, detailed bass down to 24Hz 100W of Class D Amplification and 10" drivers power the unit for incredible sound quality Dolby Atmos, DTS:X, and Auro 3D support lets you create an immersive audio experience in any living space Down-firing woofer and well-designed cabinet minimize resonance and sonic interference for clearer sound Pair with other Polk products, available separately, to create a true surround sound experience Required accessories (sold separately): Speaker wire (make sure to measure the room so you'll know how much wire to get)