Polk Audio AA5253-B $899.95 $899.95 Polk Audio SR5250 AA5253-B 5.25-Inch Component/Coax System Product Features and Technical Details Product Features The same exotic, sweet, airy sounding Ring radiator tweeters from our LSi and RTS line is now available for your car. Included are straight and 15° angle flush mount. Finite Element Analysis (FEA) design makes the