Niles CM630 (Pair) 2-Way 6-inch Speakers with Pivoting Tweeter Integrated Woofer/baffle Design Delivers Greater Low Frequency Response By Employing A 6" Woofer Where Competitive Models Of The Same Outer Size Employ 5" Woofers Polypropylene Cone Is Light, Strong And Well Damped To Provide "best In Class" Bass Response Butyl Rubber Surround Damps Resonance And Provides Exceptional Durability 1" Joystick Type, Pivoting UltraSilk Soft-dome Tweeter Provides For Precise Aiming Of High-frequencies Without Diffraction Includes Both Flush-mount Aluminum Grille And Recessed Cloth Grille That Masquerades As A Light Fixture