The IW850 is designed for ultimate performance in the digital home theater environment. Equipped with an aluminum dome tweeter that delivers ultra-smooth voicing and precise separation between instruments, along with an 8" Kevlar woofer for deep extended bass response, it"s a hallmark of performance for the discerning listener. Kevlar is best component for woofers because it responds note for note without coloration and has big cranking power. You can turn the dial up for higher listening levels without annoying distortion. The IW850 also includes contour switches that let you tailor frequency response to your room arrangement. Every part of this in-wall is designed to deliver the best sound possible audio, and we"ll stand the IW850 up against other brands that cost twice as much.