Polk Audio TSi500 Floorstanding Speakers - Black (Pair) You get a a pair of Polk Audio TSi 500 Black Tower Speakers Single versatile high-performance floorstanding loudspeaker Equipped with 1-Inch silk/polymer composite Dynamic Balance dome tweeter Equipped with four 6.5-Inch diameter bi-laminate organic fiber cone woofers Recommended Amplification: 20-275 watts/channel  Frequency response: 28Hz-25kHz