The Kicker KMXL 6×9 coaxial speakers use a proprietary high-frequency horn design and 1-1/4 inch aluminum tweeters to provide smooth, controlled sound at high listening levels; sold in pairs. Specifications include 6×9 woofers 160 x 230 mm, 4 ohm impedance, recommended amplifier power 15-150 watts RMS, 300 watts peak power handling, 92 dB sensitivity, 70-20000 Hz frequency response, mounting hole diameter 5-13/16 x 8-9/16 in (148 x 218 mm), mounting depth 3-3/8 in (85 mm), both white and charcoal grilles included, and a 12 dB/octave high-pass crossover at 80 Hz recommended for maximum power handling.