The Reference R-620F floorstanding speaker is packed with best-in-class audio technology for an incredible listening experience that is built on more than 75 years of Klipsch acoustic experience.Tractrix Horn TechnologyKlipsch exclusive 90x90 Degree Tractrix horn technology ensures that the R-620F high frequency energy is aimed at the listener and reduces artificial reverb or filtering caused by indirect sound bouncing off of walls. Using this proprietary focused technology gives you the best clarity, dynamics, and detail from your movies and music.Linear Travel Suspension Tweeter With Kapton SuspensionKlipsch exclusive Linear Travel Suspension (LTS) aluminum tweeter minimizes distortion for enhanced, detailed performances. Using Kapton, an extremely light and rigid material, in the tweeter suspension provides high efficiency and improves resolution and detail. LTS tweeters are a hallmark of Klipsch speakers, making them some of the best speakers in the world.Spun Copper IMG WoofersInjection Molded Graphite (IMG) woofer cones are exceptionally light while being extremely rigid - providing remarkable low frequency response, with minimal cone breakup and distortion. When paired with the Tractrix Horn-Loaded LTS Tweeter, it provides speaker efficiency highest in its class.Rear Tractrix PortThe rear Tractrix port is perfectly matched to the cabinet and woofers, creating ideal airflow with minimal distorti