90° x 90° Silicon Composite Hybrid Tractrix HornHorn loading maximizes efficiently and increases detail while focusing high frequencies towards the listening area. Proprietary Tractrix geometry provides the most efficient transfer of high frequency waves into the listening area. The phase plug and compressed molded silicon face ensure smooth frequency response.LTS Titanium Diaphragm TweeterThe exclusive 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.Vented Tweeter DesignThe new vented tweeter housing reduces standing waves that create unwanted harmonics, resulting in enhanced detail and clarity in high frequency reproduction.Spun Copper Cerametallic WoofersA signature feature on the Reference Premiere series, Cerametallic woofers are exceptionally rigid and lightweight for minimal distortion and maximum efficiency. When paired with the Tractrix horn-loaded LTS tweeter, it provides the highest speaker efficiency in its class.Tractrix PortsUtilizing Tractrix geometry, the Reference Premiere ports allow for the most efficient, fastest air transfer from the cabinet, which reduces port noise for punchier low frequencies. Klipsch Tractrix ports have custom designed inner flares that help reduce air turbulence entering the port. Less turbulent air helps reduce port noise for cleaner, more powerful bass.Furniture Grade Materials And FinishesFinishes include ebony vinyl, walnut vinyl and piano gloss. Ebony and walnut models boast satin painted baffles with a scratch resistant finish, while the premium piano gloss cabinet is hand-sanded for a clear, mirror-like finish. The mirror-life piano gloss finish is seamless due to the meticulous hand sanded and hand polished process.