The Phoenix Gold Z-Series Z46CX is a 4"x6" 2-way full-range speaker rated at 30 watts RMS. Packed with legendary Phoenix Gold sound the Z46CX is a great replacement speaker that will definitely improve the sound quality in your vehicle over those dull factory speakers. The Z-Series speakers offer a polypropylene woofer cone and a butyl rubber surround. The PEI tweeters will add that missing clarity and definition your music has been missing.