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Klipsch Reference R-51M

Bookshelf speakers

Item # 714R51M

Looking for a pair of bookshelf speakers that rock your music playlists and movie night? Then check out the...

Looking for a pair of bookshelf speakers that rock your music playlists and movie night? Then check out the...

California customers:
Please click here for your Proposition 65 warning.


Item # 714R51M

Out of stock

$289.00 -$93.16 Outlet savings

$195.84 pair

Other options

About the Klipsch Reference R-51M

High-quality performance for music and movies

Looking for a pair of bookshelf speakers that rock your music playlists and movie night? Then check out the Klipsch Reference R-51M. This solidly built bookshelf pair features Klipsch's famous horn-loaded tweeter, which produces clear, detailed highs. You'll also enjoy solid bass response thanks to the copper spun 5-1/4" woofer and rear-firing port. 

High-quality performance for music and movies

Looking for a pair of bookshelf speakers that rock your music playlists and movie night? Then check out the Klipsch Reference R-51M. This solidly built bookshelf pair features Klipsch's famous horn-loaded tweeter, which produces clear, detailed highs. You'll also enjoy solid bass response thanks to the copper spun 5-1/4" woofer and rear-firing port. 

Gold-plated binding posts offer easy, secure speaker wire connections. The R-51Ms perform beautifully in a two-channel music system or as the front channels of your home theater setup.

Build a complete Reference system

Add more bass to the R-51Ms with a matching subwoofer, or team them with other Klipsch Reference speakers for high-impact home theater.

Bookshelves: Klipsch R-41M
Center channel: Klipsch R-34C and Klipsch R-52C
Surround speakers: Klipsch R-41SA
Floor-standing speakers: Klipsch R-610FKlipsch R-620F, and Klipsch R-820F
Powered subwoofers: Klipsch R-100SW and Klipsch R-120SW


Product highlights:

  • frequency response: 62-21,000 Hz (±3dB)
  • impedance: 8 ohms compatible
  • sensitivity: 93 dB
  • power handling: up to 85 watts RMS (340 watts peak)
  • 90° x 90° Tractrix® horn with 1" LTS (Linear Travel Suspension) aluminum diaphragm compression tweeter
  • 5-1/4" copper spun magnetically shielded IMG woofer
  • bass-reflex design
  • rear-firing port provides fast, efficient airflow from the cabinet for clear, powerful bass
  • removable grilles offer a clean, streamlined look
  • durable wood grain vinyl finish
  • gold-plated binding post speaker terminals
  • 7"W x 13-5/16"H x 8-1/2"D
  • weight: 11 lbs. each
  • warranty: 5 years
  • Our 60-day money-back guarantee
  • MFR # 1065839

What's in the box:

  • 2 Bookshelf loudspeakers
  • 2 Grilles (installed)
  • 8 Self-adhesive rubber feet
  • Quick Setup Guide
  • Important Safety Instructions
  • Warranty Information

Scratch & Dent items may be missing non-essential accessories. In some cases the manufacturer's accessories have been replaced with generic equivalents.

See the difference between "Open Box" and "Scratch & Dent" Outlet items

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Klipsch Reference R-51M reviews

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More details on the Klipsch Reference R-51M

Stacey B.

Features & specs

Enclosure Bass Reflex
Finish MDF/Wood-grain vinyl
Color Black
Video Shielded No
Tweeter Type Tractrix Horn
Tweeter Size (inches) 1.0
Midrange Size (inches) N/A
Woofer Size (inches) 5.25
Woofer Composition Copper-spun IMG
Woofer Surround Rubber
Power Range up to 85
Sensitivity 93 dB
Impedance (Ohms) 8
Frequency Response 62-21k Hz
Connector Type 5-way post
Bi-amp Inputs No
Height (inches) 13
Width (inches) 7
Depth (inches) 8-9/16
Weight (pounds) 11
Mounting Bracket Included No
Recommended Stand Height (inches) 24-28
Parts Warranty 5 Years
Labor Warranty 5 Years
The Klipsch Reference R-51M replaces these items:

Product Research


1" Horn-Loaded Tweeter: The R-51M bookshelf loudspeaker features Klipsch's proprietary Tractrix Horn technology mated with a 1" aluminum LTS tweeter, for impressive high-end response and greater extension, enhanced imaging and powerful dynamics.

  • 90°x90° Tractrix Horn: The square Tractrix Horn delivers a 90° (w) x 90° (h) dispersion pattern for a broader sound-stage. Klipsch exclusive Tractrix horn technology ensures that the speaker's 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 provides clarity, dynamics, and detail for your movies and music
  • LTS (Linear Travel Suspension): Behind each horn lies a 1.0" tweeter with a linear travel suspension. Klipsch exclusive Linear Travel Suspension (LTS) minimizes distortion for enhanced, detailed performances. In addition, Using Kapton (an extremely light and rigid material) in the tweeter suspension provides high efficiency and improve resolution and detail.

5.25" Copper-Spun IMG Woofer: The Klipsch R-51M bookshelf speaker houses a single 5.25" Copper-Spun IMG woofer. The Copper-Spun IMG (Injection Molded Graphite) woofer is exceptionally light while being extremely rigid - providing remarkable low frequency response, with minimal cone breakup and distortion.

Flared Port: The Klipsch Reference series bookshelf speaker features a rear-firing port that is perfectly matched to the cabinet and drivers. The port is precisely flared to minimize turbulence even at the lowest frequencies.

MDF Cabinet: The Klipsch R-51M bookshelf speaker features a MDF cabinet with a scratch-resistant, textured wood grain vinyl that seamlessly integrates into almost any room or decor. The enclosure's reinforced MDF construction reduces cabinet vibration for less audible coloration and improved sonic accuracy.

Acoustically Transparent Grille: The Klipsch R-51M bookshelf speaker comes with a removable, black cloth grille that is magnetic and acoustically transparent.

5-Way Binding Posts: The Klipsch Reference series bookshelf speaker is fitted with sturdy 5-way binding posts to ensure a secure connection to many types of cable and connectors. The 5-way binding post terminals will accept banana plugs (single or dual), pin-connectors, spade-lugs and bare wire (up to 10AWG). Two plastic caps will need to be removed to use banana plugs.

Mounting Options: The Klipsch R-51M can be placed on a speaker stand, bookshelf, table, or other flat surface. The bookshelf loudspeaker comes with self-adhesive rubber feet to secure the speaker in place and prevent any damage to your stand's or shelf's surface. The rubber feet add approximately 0.3125" to the overall height of the speaker.

Note: There is no included bracket, keyhole slot, or threaded insert to wall-mount the speaker.

Application & Placement: The Klipsch R-51M bookshelf loudspeaker can be used in a dedicated stereo application or in a home theater application as front and/or rear speakers.

  • Front Placement: For optimum performance in a stereo application or as front speakers in a home theater application, Klipsch suggests placing the loudspeakers 6' to 15' apart. They may also be toed-in slightly for better stereo imaging. The listening position should be about 1 to 1.5x the distance separating the speakers.
  • Rear Placement: When used as surround speakers in a home theater setup, the loudspeakers should be placed approximately 2' above the listening position. Typically this will be approximately 5' to 7' above the floor. The surrounds should be placed on the walls directly adjacent to the listening position. Another option would be on the wall behind the listening position.

Reference Series: The Klipsch Reference series consists of four floorstanding speakers (R-610F/R-620F/R-820F/R-625FA), two bookshelf speakers (R-41/R-51M), two center channel speakers (R-34C/R-52C), and one Dolby Atmos speaker (R-41SA) - all sold separately. The Klipsch Reference series line-up of loudspeakers sound great in stereo and home theater applications.

Optional Powered Sub: For bigger & deeper bass response, pair the Klipsch Reference series loudspeaker with one of Klipsch's powered subwoofers (sold separately).

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Customer Q&A

Crutchfield asked: Why did you buy this?
current reference owner [ M  May 21, 2020 ]
Based on reviews [ Erick  May 07, 2020 ]
The great reviews! [ Carlos  May 06, 2020 ]
This is an American brand with top notch products and quality. I'm excited to add this to my home. [ Adam  Mar 01, 2020 ]
Customer ratings, brand and price all lined up. [ JAMES  Feb 07, 2020 ]
I purchased them to match my reference subwoofer. [ eric  Jan 28, 2020 ]
I needed to replace a couple quite old wall mounted surround speakers (one of which picked up some static (I ruled out the wiring by swapping to the other wall)). These fit right into the setup I have now which includes two large Klipsch front speakers and a Klipsch center channel speaker. [ Mike  Jan 24, 2020 ]
I have always been a fan of Klipsch. I have Klipsch speakers now. Their reputation for excellence is beyond comparison. [ JERRY N  Jan 20, 2020 ]
Mandy was excellent in helping me choose these speakers after listening to my concerns! [ JOHN J  Jan 06, 2020 ]
good reputation [ Stephen  Dec 31, 2019 ]
Small but big in sound [ Eliezer  Dec 20, 2019 ]
I've owned Klipsch speakers for over 30 years and see no reason to change. excellent sound quality and durable [ robert  Dec 18, 2019 ]
Frankly, affordability. Back channel sound is an area I don't feel the need to splurge on. [ Kirk  Dec 11, 2019 ]
2nd small set to feed off my new NAD 386 BluOS which I just got from you. Price was right with Crutchfield support. They appear to handle the power of the new amp [ JOHN  Dec 07, 2019 ]
Positive reviews and price. [ Ezequiel  Dec 04, 2019 ]
These Klipsch speakers closely match my RB-51 series. The grilles are slightly different with similar size tweeter & woofer. [ Nick  Dec 03, 2019 ]
Good price and quality [ G. John  Dec 03, 2019 ]
On sale and good reviews. [ David  Dec 03, 2019 ]
With sales price terrific value!! [ Thomas  Dec 03, 2019 ]
Hoping for a great product! [ Thor  Nov 30, 2019 ]
Klipsch sound quality is so life like! [ J  Nov 29, 2019 ]
price [ D  Nov 28, 2019 ]
Awesome speaker [ Kapil  Nov 28, 2019 ]
Quality [ Jeffrey  Nov 26, 2019 ]
musical, tonal delivery, size, price, and availability when I needed the speakers for the holy days. [ Barton  Nov 26, 2019 ]
Best bang for the buck in the reference speaker world! [ Carl  Nov 25, 2019 ]
just moved and needed new speakers [ Vernon  Nov 24, 2019 ]
Was reading reviews on bookshelf speakers and people seem to rave about Klipsch. 5 star reviews and over 50% off so it was no brainer. I was considering the Polk speakers because I put a set of Polk 6.5" in the boat this past summer and they BANG. [ Garrett  Nov 22, 2019 ]
need a second pair of bookshelf speakers to complete mu current of Kef c. the klipsch should had more bass and richer sound. [ Bruno  Nov 09, 2019 ]
A big fan of Klipsch and I needed it to complete my surround sound system.. [ Ocean  Oct 26, 2019 ]
These sound great and they were on sale [ MATTHEW  Oct 06, 2019 ]
I did my research on speakers including this 1, & I get the most value for the money with Klipsch. [ S  Jul 13, 2019 ]
Great price and finishes a surround sound rebuild with new klipsch R-51pm speakers and klipsch R-100 sw [ JEFFREY  Jul 12, 2019 ]
too many stars at a great price . had to buy. [ Thomas  Jul 09, 2019 ]
Sale Price [ J  Jul 08, 2019 ]
I blew out the bass speaker in one side of the R-41M set so in order to correct the cause I'm trying a higher wattage rated speaker. Hope I'm right. [ DANA  Jun 05, 2019 ]
To complete my set,except my sub. awesome sound for every occasion [ Donald  Apr 21, 2019 ]
Love klipsch products, good reviews [ John  Mar 22, 2019 ]
Klipsch bookshelf speakers sound amazing for their size. [ RANDY H  Mar 19, 2019 ]
Familiar with the Klipsch sound for so many years that when these were at a $75.00 discount just could not resist. Have an Olive One streamer with an EBTB subterranean subwoofer to go with these. Expecting a killer sound system. [ Derwin  Feb 08, 2019 ]
Expanding from 5.1 to 7.1 and these R-51Ms seem to be the best match to my Reference Premier RP 160s and matching gigantic RP Center Channel that are up front. [ Ryan  Jan 30, 2019 ]
Friend's recommendation [ R  Jan 26, 2019 ]
Positive reviews [ Edward  Jan 24, 2019 ]
Great sounding speakers and perfect size for my office. [ Warren  Jan 18, 2019 ]
I have one set already, just adding to it. [ Monty  Jan 15, 2019 ]
I generally like the sound, especially the brightness, of Klipsch speakers. These speakers will also fit nicely on the bookshelves in my office. [ Stan  Jan 09, 2019 ]
best deal, older model 5.25" [ Emmanuel  Jan 08, 2019 ]
matches my subwoofer [ denes  Jan 05, 2019 ]
I choose this based on my previous experience with Klipsch and the online reviews. [ Todd  Jan 03, 2019 ]
I like Klipsch [ Gary  Dec 22, 2018 ]
referral [ Gladys  Dec 07, 2018 ]
Love the speaker [ J  Dec 07, 2018 ]
Great Reviews. Recommended by to audiophile friends. [ Thomas  Dec 06, 2018 ]
I needed a complimentary set to match a previously purchased set of the same. Just for the mancave...! [ Timothy  Dec 06, 2018 ]
on sale for less than the R-41m [ Marc  Nov 24, 2018 ]
great deal, good product [ Frank  Nov 23, 2018 ]
I miss the old school speaker that has wires [ David  Nov 23, 2018 ]
home theater surround spkrs [ Srinivas  Nov 23, 2018 ]
Replacing due to someone knocked my speaker over and broke it. [ Wil  Nov 23, 2018 ]
Eliteness [ Daniel  Nov 22, 2018 ]
Klipsch black Friday sale. I thought they would be a good choice for small area front channel. [ Edward  Nov 22, 2018 ]
I like Klipsch because there the most efficient speakers on the market. [ James  Nov 21, 2018 ]
Black Friday price. [ Ken  Nov 20, 2018 ]
Price and quality for small setup [ JOHN  Nov 20, 2018 ]
Recommended by Friend. [ Wayne  Nov 20, 2018 ]
Choose Quality products [ S  Nov 19, 2018 ]
good frequency range low price [  Nov 18, 2018 ]
To match other speakers in a home theater system [ LATHROP  Nov 17, 2018 ]
Great value [ MARK  Nov 17, 2018 ]
Good reviews. I have to hear it myself. [ Alejandro  Nov 15, 2018 ]
Recently saw a video by Steve Guttenberg who was talking about this very speaker, so clearly the speaker gods wanted me to have them..."right?". Plus, I've never had a set of Klipsch speakers and for "half price", it was worth the gamble. [ M  Nov 15, 2018 ]

3 questions already asked

How do these compare to the R-15M? Is it worth upgrading to these?
[ Jay  Nov 25, 2018 ]
8 answers
it depends more on price. at the price i paid for the R-51's (124.99), it's worth picking them up on their own! the sound is terrific!
[ brian  Dec 03, 2018 ]
Not familiar with the R-15M, but I'm very pleased with the R-51M speakers. My only suggestion would be if you are going to get the R-51Ms, make sure you have a decent subwoofer or pair them with another set of speakers with a substantial low end. I have my R-51Ms paired with a set of Elac B6s "and" an old Infinity sub. My goal with buying the R-51Ms was to raise the ceiling of the highs and enrich the mids that my Elacs were lacking. Adding the sub just rounded out the bottom end and really added some extra bass punch. I read somewhere that a great way to get better performance from your speakers without spending a fortune was to pair two sets of speakers that have different strengths. I can verify that my "Budget Wall-0-Sound" kicks ass and it didn't have to sell any of the kids to do it. (Though I've been tempted) If the half price sale is still going on, take advantage and pick up a pair of these. Hell, you can always send them back if you don't like them. But I think you will want to keep them. Cheers!
[ M  Dec 03, 2018 ]
[ LATHROP  Dec 03, 2018 ]
Well if your referring to the R-15pm. I'm not sure the R-15pm are powered speakers. The R51m are not. I haven't heard the 15pm's so I can't give you an honest answer. But I'm using four 51m's as my surround and surround backs, and I'm using an Emotiva power amplifier with a Marantz pre amp and they sound amazing. For both movies and music. You won't be disappointed.
[ Jorge  Dec 03, 2018 ]
Never heard R-15M so don't know
[ DSE  Dec 03, 2018 ]
The R-51M seems to be the same speaker as the R-15M judging by the speaker specs.
[ Darren  Dec 03, 2018 ]
I can't answer this question as these are a Xmas present for somebody else.
[ Steve  Dec 03, 2018 ]
Sorry, I've never heard the 15's.
[ Gregory Scott  Dec 03, 2018 ]
Can these be mounted on the wall?
[ Mike  Nov 21, 2018 ]
2 answers
I don't have an answer for that. Sorry. I plan to have them eventually on pedestals for better sound production.
[ Howard V.  Nov 24, 2018 ]
Yes with just a single nail or screw, but these guys are big. I'd recommend keeping them on shelf or at the very least hang them on a stud.
[ William  Nov 22, 2018 ]
can you use banana plugs on these speakers?
[ Liam  Nov 01, 2018 ]
5 answers
Yes.....They might be a little tight.Connect carefully. Jazz on!!
[ LUIS A  Nov 02, 2018 ]
i believe it is possible. my receiver does not accept banana plugs so i do not have them on my setup but there are holes in the posts
[ Rylan  Nov 02, 2018 ]
Yes the terminals have the removable caps where banana plugs would go.
[ John  Nov 02, 2018 ]
Yes you can
[ Jorge  Nov 02, 2018 ]
[ Nathan  Nov 01, 2018 ]

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