6.5 component speaker system with 1 aluminum dome tweeters; Euro-DIN chassis for simple installation; 90W max; 45W RMS; Freq resp: 20Hz-20kHz; Mica-filled poly cones ; Butyl rubber surrounds ; ABS gaskets ; Silicone jackets on leads ; Proprietary deep-drawn, heavy-gauge powder-coated stamped steel baskets; Aluminum dome tweeters seated on treated silk surrounds; 12dB/octave crossover slopes; Imp: 4ohm ; Includes midrange grilles & flush- & surface-mount tweeter mounts;