Car Speaker audio TS-A6991R Key Features ?6X9" 5-Way Speakers ?Foamed IMPP Cone with Ferrite Magnet ?Butyl Rubber Surround ?2-5/8" Balanced Dome PPC Midrange ?Glass-Imide Voice Coil Bobbin ?CCAW (Copper-Clad Aluminum Wire) long voice coil ?Latex Damper ?1-1/2" Silver film Cone Tweeter ?3/4" Silver film Dome Supertweeter ?1/2" Silver fim dome Supertweeter ?Deep Basket for Powerful Bass response Specifications ?400 Watts Max. Music Power ?80 Watts Nominal ?Sensitivity (Efficiency): 93dB (1W/1m) ?Frequency Response: 25 - 32kHz ?4 Ohm Rated ?Mounting dept: 3-7/16"