The HX Series midrange/tweeters feature a pure aluminum diaphragm to provide high sound quality and extended high-frequency response. Woofers feature metal-sputtered olefin/aluminum-evaporated diaphragms to combine strength with improved sound quality. Totally new in design, the front grille is painted silver, while the backside is painted black and equipped with a woofer magnet cover for stylish looks.Click on Overstock.com for huge savings on car audio components.Features include:5.25-in. 3-way speaker180W max. music powerHigh-efficiency heat-resistant square wire voice coilMetal-sputtering Olefin wooferHighly responsive aluminum cone midrangeHighly responsive aluminum dome tweeterStrontium magnet (woofer)Neodymium magnet (midrange)Butyl rubber edgeMagnet cover (woofer)40-32,000Hz frequency response4 ohms impedance1-15/16-in. mounting depth