These CS-Series 6x8-inch Coaxial Speakers are the perfect way to upgrade your factory system. CS-Series Coaxials deliver remarkable performance and ultra-clean bass with a heavy-duty motor/magnet structure not found in stock speakers. A stamped-steel frame supports a rigid polypropylene cone with EVC™ (Extended Voice Coil) technology for the best sonic quality. Using zero-protrusion PEI tweeters with neodymium magnets, you get the clarity you need without interfering with factory grilles. These CS speakers work best with 75 watts of recommended power.