The IW690 is capable of handling the most demanding digital audio signals in home theater systems and listening rooms of intermediate size. The IW690 is flagship in the 6.5-Inch Series and features a 1-Inch aluminum dome tweeter and Kevlar woofer for remarkable clarity and bass response. Kevlar is best component for woofers as it responds note for note without coloration and has big cranking power so you can dial up your system for higher listening levels. The contour switches will let you tailor frequency response to your room arrangement.