Standing only 34 tall and less than 8 wide, yet able to produce deep bass extension, The RP-4000F floorstanding speaker takes your movies and music to another level by delivering incredible sound from Klipsch's signature Klipsch Tractrix horn-loaded technology and spun copper Cerametallic woofers. 90° x 90° SILICON COMPOSITE HYBRID TRACTRIX HORN Horn loading maximizes efficiently and increases detail while focusing high frequencies towards the listening area. Proprietary Tractrix geometry provides the efficient transfer of high frequency waves into the listening area. The phase plug and compressed molded silicon face ensure smooth frequency response. When combined, the cleanest, natural sound possible is created. LINEAR TRAVEL SUSPENSION (LTS) TITANIUM DIAPHRAGM TWEETER The Linear Travel Suspension minimizes distortion for enhanced, detailed performance. LTS tweeters are a hallmark of previous Reference lines, making it a core component of some of the best speakers in the world.