Looking for a more moving audio experience? Take Infinity car audio for a ride. Innovative materials and breakthrough engineering have always put Infinity products out in front of the competition?€TMs. So expect extreme output from these speakers, but be prepared for accuracy and detail that may surprise you. Infinity Reference Series loudspeakers continue to be the top-selling premium speakers in the world. For instance, the 6-1/2-inch Reference coaxial model has been the number-one-selling car audio multielement speaker for five years straight. With proprietary features such as patent-pending Plus One cones, true 4-ohm topology, UniPivot edge-driven tweeters and the industry-leading Intermount III and I-Mount mounting systems, as well as the Starfish tweeter-mounting adapter, Reference Series speakers leave the competition scrambling to keep up.