IMPP Polypropylene ConeNBR Rubber Surround1" Voice Coil on Aluminum Former4-ohm System ImpedanceQuick Disconnect Terminals1.125" Mylar Midrange (CF-694)1" Mylar Tweeter .5" Super TweetersSize & Type: 5"x7" 3-way Max Power: 240w Magnet Volume (oz): 10ozFrequency Response: 65-20kHzEfficiency (1w/1m dB): 89dBMounting Depth: 2.125"