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Klipsch Reference Series RB-51

Klipsch Reference Series RB-51
alaScore 86

73 reviews

May, 2018

alaTest has collected and analyzed 73 reviews of Klipsch Reference Series RB-51. The average rating for this product is 4.8/5, compared to an average rating of 4.3/5 for other Speakers for all reviews.

We analyzed user and expert ratings, product age and more factors. Compared to other Speakers the Klipsch Reference Series RB-51 is awarded an overall alaScore™ of 86/100 = Very good quality.

Review analysis

(Based on 73 reviews)

3 expert reviews

User Reviews  


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Showing 1 - 47 of 47 Show Reviews: in English | in other languages (26)

Consumer review ( review summary for Klipsch Reference Series RB-51


alaTest has collected and analyzed 42 user reviews of Klipsch Reference Series RB-51 from The average user rating for this product is 5.0/5, compared to an average user rating of 4.2/5 for other Speakers on

100% of the reviews on give this product a positive rating.

This summary is based on the products: Klipsch RB-51 II Bookshelf Speaker - Black - PairKlipsch RB-51 II Bookshelf Speaker - Black - Pair

May, 2018

Expert review by : Clint DeBoer (

Klipsch RB-51 Bookshelf Speakers Video Preview


which included the Klipsch RF-62s. Participants in the speaker shootout seemed to rank the Klipsch very well, enjoying its clarity and high frequency definition as well as its deep bass response. Recently we were personally introduced to its "little...

Nov, 2011

Expert review by : Clint DeBoer (

Klipsch RB-51 Bookshelf Speakers Preview


The Klipsch RB-51 Reference Bookshelf Speakers are priced at $389/pair and are available in a black woodgrain vinyl finish. They come with a low-diffraction, magnetically-attached grille.

Oct, 2010

Consumer review (

Klipsch Home Theater Speakers


These speakers are used as Front and Rear Presence Speakers and live by the Klipsch quality of construction and sound. Excellent product.

Good Power Output, Great Sound Quality, Attractive Design

Jan, 2012

Consumer review (

Klipsch RB-51 II


I am using these speakers as a 2 speaker stereo set up. I have them powered by an Adcom GFA555-II, an Adcom Pre amp GFP555-II, An JVC XL-Z1050 CD Player, and an Audio Technica AT-PL120 turn table. I listen to all the genres of music; acoustic jazz,...

Apr, 2009

Consumer review (

Klipsch RB-51 II


great speakers. wonderful highs and strong lows. would recommend to anyone. i purchased them from for $289.00 much cheaper than anyone else.

Feb, 2009

Product Specifications

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. 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. The RB-51 comes with a low-diffraction, magnetically attached grille to further accentuate the elegance of this speaker.


Crossover frequency:1500
Frequency range:50 - 24000
Peak Music Power Output (PMPO):300
RMS rated power:75


Color of product:Black

Dimensions & Weight



Packaged Quantity:1
Product Line:Klipsch Reference Series


Audio output channels:2.0
Number of drivers:2
Number of Speakers:2
Number of tweeter drivers:1
Number of woofer drivers:1
Recommended usage:Speaker set unit
Speaker placement:Tabletop/bookshelf
Tweeter: Yes
Tweeter diameter:1
Tweeter Size:1
Woofer: Yes
Woofer Diameter:5.24
Woofer Size:5.24


Color:Black ash

Ports & interfaces

Connectivity Technology:Wired
Wireless technologies:Wired

Speaker System

Amplification Type:Passive
Connectivity Technology:Wired
Crossover Channel Qty:2-way
Max (RMS) Output Power:300Watt
Nominal (RMS) Output Power:75Watt
Response Bandwidth:50 - 23000Hz
Speaker System Type:Left / right channel speakers

Weight & Dimensions