RP-504C II ensures you hear every word of the dialogue and lyrics with crystal-clear precision. Horn 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. When combined, the cleanest, most natural sound possible is created. The second generation increases horn size for a larger soundstage and enhanced directivity.The exclusive Linear Travel Suspension minimizes distortion for enhanced, detailed performance. The vented tweeter housing reduces standing waves that create unwanted harmonics, resulting in enhanced detail and clarity in high frequency reproduction. The Cerametallic woofers are exceptionally rigid and lightweight for minimal distortion and maximum efficiency. Aluminum shorting rings reduce distortion as well as increased power handling and the new motor structure improve transit response with more control with greater speed and accuracy. Utilizing 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.The input panel features audiophile-grade wire and easily accessible aluminum binding posts for any connection type. Finishes include ebony vinyl and walnut vinyl that boast satin painted baffles with a scratch resistant finish. The strong, flexible, and removable grille attaches magnetically for an elegant transition from powerful showstopper to discrete performance piece. Cork pads replace rubber bumpers for security on a stand or table.