A new, larger 90° x 90° silicone composite hybrid Tractrix® horn provides incredibly efficient transfer of high-frequency waves into the listening area for crisper, clearer sound. The phase plug and compression molded silicone face ensure smooth frequency response. The exclusive 1" LTS minimizes distortion for enhanced, detailed performance. LTS tweeters are a hallmark of previous Reference Premiere Series, making it a core component of some of the best speakers in the world. The vented tweeter housing reduces standing waves that create unwanted harmonics, resulting in enhanced detail and clarity in high-frequency reproduction. A signature feature on the Reference Premiere series speakers, the dual 8" Cerametallic™ woofers have been updated for absolutely flawless sound reproduction, minimum distortion, and maximum efficiency. The redesigned woofer will deliver the power, detail, and emotion you expect from a Klipsch Reference Premiere speaker. Utilizing Tractrix geometry, the Reference Premiere port allows for the most efficient, fastest air transfer from the cabinet, which reduces port noise for punchier low frequencies and cleaner, more powerful bass. Dual input terminals for bi-wiring / bi-amping capabilities separate high and low-frequency current into different speaker cables, reducing distortion for clearer midrange. Bi-amping allows for further optimization of performance with separate outboard power amplifiers for the high frequency and low-frequency drivers. Upgrading to immersive Dolby Atmos sound with the RP-500SA speakers is incredibly easy with simple, hidden connections on the back of the speakers. These refined connections reduce wire visibility while holding them in place for better wire management.