? 10W-200W;? 100W recommended amp power ;? 8 polycarbonate woofer;? .5 poly dome tweeter;? Dual voice coils & twin tweeters;? Imp: 8ohm ;? Freq resp: 40Hz-21kHz ;? Sensitivity: 90dB @ 1W/1m ;? Required cutout: 9.5 dia;? Required depth: 3.44;? Each;