Kicker 6.5 Inch QS-Series Matched Component System 41QSS654New for 2014. The ultimate component set available in two sizes; cast aluminum crossovers; midranges boast a Tri-Tech cone in cast-aluminum baskets with chrome backplates and duo-wave spider designs; DuPont Tetoron dome tweeter with neodymium magnets; spring-loaded nickel-plated terminals; stylish grilles and separate trim rings.Speaker Size 6-1/2" Design 2-way Component System Tweeter Design Dome Tweeter Composition Teteron Woofer Composition Polypropylene Woofer Surround Rubber Peak Power Handling 180 watts RMS Power Handling 90 watts Sensitivity 86 dB Frequency Response 40 - 22000 Hz Impedance (Per Voice Coil) 4 ohms Cutout Dimensions 5-7/16" Speaker Grilles Yes