Polk Audio RTI A9 Floorstanding Speaker (Single， Cherry)<div style="text-align: left;"><strong>[Product Information]</strong><br><ul><li>Single real wood floorstanding speaker with all MDF construction and resonance-free enclosures</li><li>Equipped with dual 5.25-inch polymer composite cone drivers and three 7-inch polymer composite subwoofers</li><li>Features Power Port technology to reduce "chuffing" or "port noise"</li><li>Equipped with one 1-inch silk/polymer composite dome tweeter</li><li>Features a neodynium magnet， low viscosity ferro-fluid cooling， and a heat sink on the back of the magnet</li></ul></div><img src="http://ecx.images-amazon.com/images/I/41dDA5dLOnL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/31hjxiT2AFL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/31tV3I8E1bL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/316iJEVCYcL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/31u5v%2B96tLL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/41UoVH2i2oL.jpg" noproxy>