Klipsch R-51MB Bookshelf Speaker-Black – Pair


Condition: New

Klipsch R-51M Bookshelf Speaker-Black-Pair

  • 1″ Aluminum LTS tweeters
  • 90×90 Square Tractrix Horns
  • Dual 5.25″ Spun-Copper IMG Woofers
  • Bass-Reflex via Rear-Firing Port
  • Strong, Flexible Removable Magnetic Grille
  • Dimensions: 13.3″ x 7″ x 8.5″

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SKU: R51MB Category:

Frequently Bought Together

+R-41sa+Klipsch R-52C+Klipsch R-51PM
Price for all:   $2,256.00

Product Description

Klipsch R-51MB Bookshelf Speaker-Black-Pair

These Klipsch R-51MB are sold as a Pair.

Tractrix® Horn Technology

Klipsch exclusive 90×90º Tractrix® horn technology ensures that the R-51M high frequency energy is aimed at the listener and reduces artificial reverb or filtering caused by indirect sound bouncing off of walls. Using this proprietary focused technology gives you the best clarity, dynamics, and detail from your movies and music.

Klipsch Reference Lts Tweeter Anatomy

Linear Travel Suspension Tweeter With Kapton® Suspension

Klipsch exclusive Linear Travel Suspension (LTS) aluminum tweeter minimizes distortion for enhanced, detailed performances. Using Kapton®, an extremely light and rigid material, in the tweeter suspension provides high efficiency and improve resolution and detail. LTS tweeters are a hallmark of Klipsch speakers, making them some of the best speakers in the world.

Reference 2018 Bookshelf Woofers

Spun Copper IMG Woofers

Injection Molded Graphite (IMG) woofer cones are exceptionally light while being extremely rigid – providing remarkable low frequency response, with minimal cone breakup and distortion. When paired with the Tractrix Horn-Loaded LTS Tweeter, it provides speaker efficiency highest in its class.

Reference 2018 Bookshelf Finish

Sleek Design

Exposed fasteners, low profile magnetic grilles and a scratch-resistant, textured wood grain vinyl give the Reference Series a polished, modern appearance.

Reference 2018 Bookshelf Cabinet

High Quality Cabinet Design

Reinforced MDF construction reduces cabinet vibration for less audible coloration and improved sonic accuracy – giving you the ultimate listening experience that’s built to last.


Additional Information


-FREQUENCY RESPONSE: 62Hz – 21kHz +/- 3dB
-SENSITIVITY: 93 dB @ 2.83V/1M
-NOMINAL IMPEDANCE: 8 ohms Compatible
-HIGH FREQUENCY DRIVER: 1” Aluminum LTS tweeter mated to a 90 x 90 square Tractrix® Horn
-LOW FREQUENCY DRIVER Single: 5.25” spun-copper IMG woofer
-ENCLOSURE TYPE : Bass-Reflex via rear-firing ports
-INPUTS: Single Gold Plated Binding Posts
-HEIGHT INCHES (MM): 13.3” (338 mm)
-WIDTH INCHES (MM): 7” (178 mm)
-DEPTH INCHES (MM): 8.5” (215 mm)
-PRODUCT WEIGHT LBS (KG): 11 lbs (5 kg)
-FINISHES: Black Textured Wood Grain Vinyl


8 Ω

Enclosure Type

Bass Reflex

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Klipsch offers a 1 year warranty


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