Planet Audio AP625 6.5-Inch 2-Way Treated Paper Cone Speaker System Power Handling (Peak) 250W , Power Handling (Contin.) 124W , Freq. Response 60Hz- 20Hz , Efficiency (1 Watt/1 Meter) 93 Db Crossover Slope @ 4.5Khz 18 Db/Octave , Efficiency (1 Watt/1 Meter) 91Db , Impedance 4 Ohm , Mid Bass Woofer Diameter 6-1/2-Inch Silk Dome Tweeter 1-Inch , Mylar Dome Micro Tweeter  , Mounting Depth 2-1/2-Inch 6.5-Inch 2-Way Speaker System , Treated Paper Cone , Butyl Rubber Surround Gloss Black Stamped Basket , Aluminum Voice Coil Former , Silk Dome Tweeters , Custom Grilles