Time Lens Technology-The acoustic centers of the tweeter and mid-bass driver are located in the same plane for superior imaging.;Aperiodic-tuned rear port enables better blending with a subwoofer.;2 1/2 Long-throw drivers with Dynamic Balance Driver Technology;1/2 Silk dome tweeters for crisp, clear imaging and smooth response that's never tiring.;Combination keyhole slot & 1/4 x 20 threaded Insert fits all aftermarket ceiling and wall brackets for ultimate flexibility;The Time lens technology enables the acoustic centers of the tweeter and mid-bass driver are located in the same plane for superior imaging.