? 6.5 component speaker system with crossovers;? 300W max;? 150W RMS;? Impact-resistant tweeter elements;? Neo-Mylar(R) soft-dome tweeters;? Silver alpha-cellulose poly cones;? UV-resistant rubber surrounds;? Treated pressed-paper cones;? Anti-resonant stamped steel frames;? Imp: 4ohm ;? Sensitivity: 89dB @ 1W/1m;? Freq resp: 55Hz-20kHz ;? Chassis depth from flange: 2.12;? Includes installation hardware;