Upgrade your car's sound system with the CS-DR6940 4-Way Coaxial Speakers. With a peak power of 550W and RMS power of 90W, experience a wide frequency response of 56 - 21,000Hz and sound pressure level of 86dB/W.m. These speakers feature a 15 x 23cm Carbon Mica Cone Woofer, 6.6cm Poly-Ether Imide Cone Midrange, and 2 types of Poly-Ether Imide Dome Tweeters for crystal clear sound. The Hybrid Surround and Ferrite Magnet enhance the overall performance.