RB-51

RB-51 Bookshelf Loudspeaker

Built to the same exacting standards as the Reference Series floorstanding models, the RB-51 represents an ideal combination of technology, performance and design. In fact, this well-thought-out speaker design will forever change the way you think about audio.

Features

  • High-performance bookshelf speaker
  • Rear-firing port
  • Tractrix® Horn eliminates acoustic interference from shelf installations

Detailed Description

Exclusive Tractrix® Horns have always been the key component of this critically acclaimed series. In the RB-51, this technology has been refined to include improved throat geometry for a more genuine, lifelike sound. Behind the horn lies a 1-inch titanium tweeter with a powerful neodymium motor structure to provide a unique combination of precision, clarity and effortless dynamics.

The RB-51 employs a 5.25-inch woofer for a solid bass foundation. This Cerametallic™ woofer with inverted copper dust cap exhibits a very high stiffness-to-mass ratio and superb damping characteristics.

Increased baffle ribbing around the horn mouth dramatically improves acoustics across the sonic range. For signal purity and perfect driver integration, the crossover on the RB-51 features the finest components and Klipsch custom internal wiring.

Available in a black woodgrain vinyl finish, the RB-51 comes with a low-diffraction, magnetically attached grille to further accentuate the elegance of this speaker.

RB-51 Specifications

frequency response50Hz-23kHz +/-3dB
power handling75W RMS / 300W Peak
sensitivity92dB @ 2.83V / 1m
nominal impedance8 ohms compatible
high freq crossover2000Hz
high frequency drivers1" (2.54cm) Titanium diaphragm compression driver mated to 90x60 square Tractrix® Horn
low frequency drivers5.25" (13.3cm) Cerametallic™ cone woofer
enclosure typeBass-reflex via rear-firing port
height11.4" (29cm)
width6.5" (16.5cm)
depth10.75" (27.3cm)
mountingKeyhole bracket and Dual 1/4"-20 threaded inserts
weight12 lbs (5.5kg)
finishesBlack Ash woodgrain vinyl
built from2006

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* Prices are US MSRP and may vary by country.

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Reviews

"The Klipsch speakers have the rare ability to be able to rocket people into ecstasy. These are really powerful speakers. Their force is breathtaking."
- Walter Wlodarski, Son & Image [9/10/2006]

A Klipsch Group Company