There are times when an installation calls for a separate woofer and tweeter and other times when a coaxial is the better approach. With the Evolution C3 Convertible Component Systems, the same product can be deployed in either configuration, delivering outstanding audio power and quality in each application. The C3-650 system features 6.5-inch (165 mm) component woofers with oversized 1.2-inch (30.5 mm) voice coils, mineral-filled polypropylene cones and injection-molded polymer baskets. The woofer design benefits from JL Audio's vast woofer design experience and advanced modeling systems. The C3 tweeters are built with 1-inch silk dome diaphragms that deliver powerful, extended response, on and off axis. Flush-mounting and surface-mounting fixtures are included to fit a wide variety of installation needs. They can also be mounted onto the woofers in a coaxial format using the included fixtures. C3 crossover networks are compact and built with premium component parts, including Mylar capacitors and segmented air-core inductors. Four levels of tweeter attenuation are provided, as well as three levels of mid-range presence adjustment, for twelve possible voicing combinations! Woofer grilles are included, each consisting of a black grille tray and a black steel mesh grille with an electroformed JL Audio logo. Sold as a pair.