Klipsch R-51MB 5.25″ Bookshelf Speaker-Black – Pair

Brand: Klipsch
Model Number: R-51M
UPC: 743878035520
Model Number: R-51M
UPC: 743878035520

Klipsch R-51MB 5.25″ Bookshelf Speaker-Black – Pair

  • Sold in pairs
  • 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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Product Description

Features & Specifications




Klipsch R-51MB 5.25″ Bookshelf Speaker-Black – Pair

Leveraging a 1″ aluminum tweeter matted to our proprietary Tractrix horn-loaded technology – the Klipsch R-51MB bookshelf speaker delivers incredible acoustics to fill your home with loud, crystal-clear sound and robust bass that no ordinary bookshelf speaker can.

Tractrix® Horn Technology

Klipsch exclusive 90×90º Tractrix® horn technology ensures that the Klipsch R-51MB 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.

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.

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 Klipsch R-51MB paired with the Tractrix Horn-Loaded LTS Tweeter, it provides speaker efficiency highest in its class.

Sleek Design

Exposed fasteners, low profile magnetic grilles and a scratch-resistant, textured wood grain vinyl give the Klipsch R-51MB Reference Series a polished, modern appearance.

High Quality Cabinet Design

Reinforced Klipsch R-51MB MDF construction reduces cabinet vibration for less audible coloration and improved sonic accuracy – giving you the ultimate listening experience that’s built to last.

View our Klipsch Bundles here

Brand Klipsch   Model Klipsch R-51M
Product: Klipsch R-51MB 5.25" Bookshelf Speaker-Black – Pair

-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


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Klipsch offers a limited 5 year Warranty – Passive Speakers