Precision Power DCX 690C 6 x 9 Coaxial Speakers - Pair Ultra-linear competition sound quality die-cast coaxial speaker system Unique off-centered cone (patent-pending) allows midrange soundfield to be aimed Dual Gap Geometry (patent-pending) underhung neodymium motor with dynamic cone braking Swivel-mounted titanium dome tweeters with in-line passive crossovers