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The ICE850 is the "Lamborghini" of the in-ceiling speakers. Perfect for high-powered whole house systems and large home theaters, premium technologies such as Kevlar woofers, pivoting aluminum dome tweeters and sophisticated crossovers provide deep bass and exceptional top-end frequency response. Kevlar is the best component for woofers because it responds note for note without coloration and has big cranking power. Contour switches will let you tailor frequency response to your room arrangement.