Niles DS8HD (Ea.) 8-inch In-Ceiling L/C/R Loudspeaker (FG01623) Patent-pending Fully Pivoting Woofer Assembly 8" Aluminum Ceramic Woofer Cone With Curvilinear Profile Dual 1" Nano Coated Ceramic, Aluminum & Titanium Dome Tweeter Integrated Baffle/frame Assembly Increases The Cone Area For Deeper Bass Than Competitive Speakers Of The Same Diameter Magnetically Attached, Rust-resistant Grille Covers Install Quickly And Provide A Low Profile Look