Pyramid 685X 280 Watt Pair 6.5" Inch Car Audio 2-Way Stereo Speakers 6.5'' Transparent Polypropylene Cone - 1/2'' Neodymium Film Dome Tweeter - Includes Grills, Wires and Mounting Hardware Non-Fatiguing Butyl Rubber Surround - 140 Watts RMS / 280 Watts Peak - Mounting Depth: 2'' 1'' High Temperature Kapton Voice Coil - Impedance: 4 Ohm Transparent Basket And Grill - Sensitivity: 91 dB 30 oz Magnet Structure - Frequency Response: 60Hz - 20KHz