Designer Aesthetics Magnetically attached MicroThinTM speaker grilles ensure a clean, virtually invisible appearance that blends with the room's aesthetics. Optional square grilles provide added design flexibility. Superior Sound Quality Precision tuned and voiced fixed woofer ceiling-mount loudspeakers provide graduated performance for all types of applications. Whether you are listening to background talk radio or a complete orchestra, Niles CM series delivers optimal performance and reliability. Installation Ease Three patent-pending spring tensioned mounting clamps permit quick installation and compensate for uneven mounting surfaces and varied environmental conditions. Weather-resistant construction enables installation in moist areas, such as bathrooms or outdoors under eaves. Install With Confidence The best-built loudspeakers deserve the best protection the Niles Lifetime Limited Warranty.Features Patent-pending Fully Pivoting Woofer Assembly Focuses The Bass And Midrange Directly Into The Listening Area Integrated Baffle/frame Assembly Increases The Cone Area For Deeper Bass Than Competitive Speakers Of The Same Diameter 8"Aluminum Ceramic Woofer Cone With Curvilinear Profile And Extended Pole Provides Natural Flat Response And Moves Any Ringing Frequencies To The Inaudible Range Dual 1 NCAT (Nano Coated Ceramic, Aluminum @ Titanium) Dome Tweeter Utilizes A Vapor Deposited Coating To Move Any Ringing Frequencies Outside The Range Of Hearing While Providing Additional Stiffening For Ultra-detailed High Frequencies Multi-axis Tweeter Array Positions The Two Tweeters On A Different Axis And At An Opposing Angle To Create Realistic Surround Sound Effects Bipole/Dipole Switch Provides Optimum Room Matching Kapton Non-conductive Voice Coil Former And Copper Shorting Caps Combine To Lower Distortion And Increase High Frequency Sound Pressure Levels Magnetically Attached, Rust-resistant Grille Covers Install Quickly And Provide A Low Profile Look Weather-resistant Construction Enables Installation In Wet Environments And Outdoors Optional Custom-tuned Rear Enclosure Is Precisely Shaped For Predictable Sound Performance And To Reduce Sound Transfer Into Adjacent Rooms Or Spaces