BOSS Audio Systems CH6520 Chaos Series 6.5 Inch Car Stereo Door Speakers (Pair)

General Specifications:Max. Power Handling: 225 Watts/ 113 Watts Max. RMS Per Pair.Impedance: 4OhmFrequency Response: 100Hz - 18kHz.System Sensitivity: 90dBCone Material: Poly Injection.Voice Coil: 1-inch Aluminum.Tweeters: 1/2" Piezo, 1" Polymide Dome.Mounting Depth: 1-11/16 inches. Cone - Made from Polyurethane, The CH6520 6. 5 inch car speakers provide a resilient and durable material that can offer great sound with the advantage of long lasting speakers .A substance called 'Polyurethane' and is categorized as a 'Polymer'. It is a resilient, flexible and durable manufactured material that can take the place of paint, cotton, rubber, metal or wood in thousands of applications across virtually all fields. It can be hard like fiberglass, squishy like upholstery foam, protective like varnish, bouncy like rubber or sticky like glue.In the specific case of our cones, this material allows for maximum flexibility that produces great sounding speakers lasting you a long, long time.