Carbon-polypropylene cone woofer</br>Butyl rubber surround</br>1" soft dome midrange</br>3/4" pei dome tweeter</br></br>Product Description</br></br>The new kfc-x183c is a true upgrade to a factory speaker system. It can handle up to 280w of output and can be easily installed in dodge?? gm?? Toyota and Chevrolet vehicles. Each pair of kfc-x183c speakers comes with a special multi-fit bracket. This bracket can be easily modified for use in a variety of makes associated with the above mentioned vehicle manufacturers. In addition the speaker features an oversized diaphragm that is 28% bigger than the kfc-x173 so it delivers exceptional audio reproduction.?280w peak power handling80w rms power handling4ohm impedance frequency response 63hz - 17khzmounting depth 2-7/16" soft dome tweeter multi bracket and 6x9 bracket?general features?woofer??????????? size 7 in (180mm)woofer diaphragm pp. Cone surround rubber basket steel (black)magnet ferrite?tweeter????????? size 1 in (25mm)tweeter diaphragm soft dome?dimensions (without grill)????? width 6-9/16 in (166mm)height 6-9/16 in (166mm)depth 3-3/16 in (81mm)mounting depth 2-7/16 in (62mm)?specifications nominal impedance 4 ?Maximum peak power 280 rated input power (rms) 80 sensitivity 87 db./w at 1mfrequency response 63hz - 17khz.</br><br/>http://www.amazon.com/gp/product/B004VZWGRUUn