Klipsch RP-600M II

Name: Klipsch RP-600M II
Brand: Klipsch

The RP-600M II is a second-generation, mid-sized bookshelf speaker from Klipsch's Reference Premiere line, a series long described as the sweet spot of their lineup. The big thing to know is a sensitivity gap. Klipsch rates it at 94.5 dB using in-room, half-space conditions. Independent reviewer Erin's Audio Corner measured 86 dB at 2.83V/1m. The measured data still drew a compliment rarely aimed at Klipsch: one of the more neutral Klipsch speakers Erin's had listened to, with reasonable linearity.

The design centers on the signature 90° x 90° square Tractrix horn, loaded with a one-inch titanium LTS (Linear Travel Suspension) dome tweeter. Klipsch first used that driver arrangement in its more expensive speakers. For this version, the horn geometry was refined for a smoother tweeter-to-horn transition, the tweeter gained a new phase plug, and a lens now covers the entire front of the cabinet. The woofer was redesigned as well, and dual input terminals allow bi-wiring or bi-amping.

Contemporary coverage of the update describes improved detail retrieval and a more balanced presentation than the already-impressive original RP-600M, at a price of $699 per pair. A Canadian classified listing for a mint pair, with five hours of use and a $700 asking price, noted that no auditions were possible due to covid. Documentation is thin. A one-page spec sheet and a 48-page multi-language manual circulate, the latter titled "Reference Premiere Speakers 2021 Manual," which points to the model's era even though exact production years haven't been pinned down.