Polk Audio DB 690 6-by-9-Inch Coaxial Vehicle Speakers (Pair, Silver) Pair of marine-certified coaxial speakers suitable for use in cars, trucks, boats, and other vehicles One 6x9-inch polymer/mica composite cone woofer and one 0.75-inch silk/polymer dome tweeter per speaker Frequency response: 35 Hz to 22 kHz Peak power handling of 300 watts (100 watts continuous) Requires mounting cutout of 5.75x8.5-inches and depth of 3.75-inches