Model:HD160G Spec:Inch 6.5" Technology Guide Line: Max. Input Power:200W Rated Input Power:50W Impedance:4Ω Frequency Response:40HZ-22KHZ Sensitivity:91dB/1w/1m Magnet:10 OZ Hight temperature Aluminum Voice Coil:1" Mylar cone Tweeter:1.2" Mylar cone Midrange:2" Explain: Red inductance loop Butyl rubber surround for smoother response Poly injection woofer cone