The third generation of Klipsch's award-winning premium Reference Premiere Series 500M II speakers features new, larger proprietary Tractrix horn technology to improve high-frequency response and extension, while enhancing imaging and dynamics. Klipsch signature copper Cerametallic woofers with aluminum faraday rings and Tractrix ports provide powerful low frequencies while minimizing distortion and maximizing efficiency. Sleek cabinet design details exude refinement and luxury with enhanced cabinet bracing, aluminum binding posts, cat aluminum feet, and discrete Dolby Atmos connections that allow for easy and refined elevation speaker integration.

Build a better sound system with this Klipsch Reference bookshelf speaker. The 1-inch aluminum tweeter and square Tractrix horn provide clear, natural high tones, while the 4-inch spun-copper woofer produces deep, distortion-free bass. This Klipsch Reference bookshelf speaker lets you crank up the volume for parties with a sensitivity of 90 dB.

Enjoy powerful sound in your study or anywhere in your home with the Klipsch R-40PM bookshelf speakers. Experience a larger soundstage with edge-to-edge 90” x 90” Tractrix horns that never lose clarity, even at high volumes. Expertly engineered with extra cabinet depth creates a warmer, more impactful sound. These Klipsch bookshelf speakers handle up to 35W RMS and 240W peak for accurate music reproduction. Easy setup, no receiver needed, and PC and TV ready, the Klipsch Reference 40 PM is the perfect powered bookshelf speaker.