The unique design of the ICE660 LCR speaker positions the 6.5? woofer at a 15° degree angle, which creates a more realistic sound stage when front surrounds are installed closer to the wall or right above the monitor. Not only is this speaker affordable, it offers customers with smaller or odd shaped rooms more placement flexibility to optimize their home theater experience. The critical high and mid-range frequencies are pointed toward the listener, not the floor, so when your video tracks left to right, the sound tracks right along with the video. You can even use them for rear and side surrounds in a 5.1 or 7.1 system. Why Use an Angled In-Ceiling Speaker? The angled speaker can be a real problem solver because not every space is ideal for custom home theater sound applications. The angled in-ceiling speaker features a 15 degree angle for the mid bass driver plus a pivoting tweeter for placement flexibility. This speaker can be part of three piece set to handle the front stage of the surround system when both on-wall and in-wall are not a favorable option. The angled design allows the ideal placement in the ceiling closer to the wall just above the monitor. This creates a more realistic sound image when compared to normal in-ceiling speakers that are mounted closer to or directly above the viewing area. Standard in-ceiling speakers are generally placed at least three feet from the wall to avoid reflective sound. The angle speaker can be placed within a foot of the wall. What is Butyl Rubber Sound? With almost double the shelf life of foam, butyl rubber has been the choice of speaker designers looking to optimize the sound based upon materials that go together. The Surround is just one of the integral parts of the speaker's motor structure. Butyl Rubber gives the speaker more excursion capability featuring a deeper bass with a wider frequency response, and its shelf life is closer to 25 years compared to the foam at 12 to 15 years. For a retrofit installation, no construction bracket is needed.