Chat
Contact us
Close contact box
Connect ID #
164 219 614 3
Connect ID #
164 219 614 3
All finished with your chat session?

We’ll email you a transcript of this conversation for your records.

Our contact center is currently closed.

Please enter your name.  
Please enter a valid email address. Why is this required?
Please enter your US phone number.  

For Tech Support, call 1-888-292-2575

Thank you, !
Our conversation will be emailed to
Advisor Image

Your Advisor,

More about me
Please enter a question  
Don't wait on hold. We'll call you back when it's your turn to talk with the next available .
Please enter your name  
Please enter your phone number  

Please enter a message  

Calls may be recorded for training and quality control purposes.

We are located in Virginia USA.

KEF LS50 Meta

Bookshelf speakers (Royal Blue)

Item # 991LS50MRB

KEF brings technological innovation and improved cabinet design to the already impressive LS50 series.

KEF brings technological innovation and improved cabinet design to the already impressive LS50 series.

Item # 991LS50MRB

Ships free

Temporarily out of stock

Ship date unknown

$1,499.99 pair

Other options

About the KEF LS50 Meta

Innovative bookshelf speakers

KEF hit a home run in 2011 when they introduced LS50 bookshelf speakers. In the intervening years, they've learned new tricks that make the KEF LS50 Meta even more impressive.

Innovative bookshelf speakers

Metamaterial close up from KEF LS50 Meta speaker

Innovative Metamaterial Absorption Technology (MAT) absorbs high-frequency vibrations to eliminate distortion in KEF LS50 Meta speakers.

KEF hit a home run in 2011 when they introduced LS50 bookshelf speakers. In the intervening years, they've learned new tricks that make the KEF LS50 Meta even more impressive.

Revolutionary sound absorption

This speaker gets the "Meta" part of its name from KEF's new and innovative Metamaterial Absorption Technology (MAT). It's a highly complex, mazelike structure that's tuned to absorb unwanted sound coming from the rear of the tweeter. The resulting sound is clear, purer, and more detailed. 

Careful cabinet design

The LS50 Meta's extremely rigid cabinet uses smooth, curved surfaces that help the sound radiate outward without distortion. It also features a patented offset, flexible port for reduced midrange coloration. As with previous LS50 models, the cabinet use a grille-less design to show off the cool-looking driver array.

A room-filling "sweet spot," thanks to Uni-Q® technology

KEF's patented Uni-Q technology places each speaker's tweeter in the acoustic center of the bass/midrange cone. This lets the LS50s create a detailed and accurate three-dimensional sound image. This makes the "sweet spot" (the ideal listening position) much larger. Sit wherever you like — you'll have fantastic sound throughout your room.

Maximize your listening experience

LS50 Metas can deliver truly incredible sound — in the right setup. We recommend 100 watts or more from a high-performance power amp or integrated amp.

Proper speaker placement is also crucial to getting the best performance out of the LS50 Metas. Placing them on a pair of color-coordinated KEF S2 speaker stands helps eliminate unwanted vibrations and reflections. Read our article on stereo speaker placement for positioning and set-up tips.

And few things add impact to your listening session like solid bass. Add a powered subwoofer to your stereo listening setup for hard-hitting, musical low end.

READ LESS

Product highlights:

  • Uni-Q® driver array technology makes your entire room sound like the "sweet spot"
  • 5-1/4" aluminum cone woofer
  • 1" vented aluminum dome tweeter
  • innovative Metamaterial Absorption Technology (MAT) absorbs high-frequency vibrations to eliminate distortion
  • Driver Performance Optimisation for enhanced sonic performance and reduced distortion
  • frequency response: 79-28,000 Hz (±3 dB)
  • sensitivity: 85 dB
  • impedance: 8 ohms
  • recommended amplifier power: 40-100 watts
  • curved baffle design ensures smooth soundwave dispersion with minimal reflection
  • two-way bass-reflex cabinet with patented offset, flexible port for reduced midrange coloration
  • 5-way binding post speaker terminals
  • high gloss finish
Dimensions and warranty:

What's in the box:

  • 2 Bookshelf loudspeakers
  • 2 Foam port plugs
  • 8 Self-adhesive rubber feet
  • Owner's Manual
  • Warranty Registration Card

Customer reviews

Loading reviews...

KEF LS50 Meta reviews

Average review:

13 reviews

Thanks for submitting your review

Filter by rating

Customer photos

Sort reviews

Sort by:
Items per page:
View page:

Verified customer (What's this?)
Verified employee purchase (What's this?)

Pros:

Cons:

Crutchfield response

<< >>

More details on the KEF LS50 Meta

Stacey B.

Features & specs

Enclosure Bass Reflex
Finish MDF/Polymer
Color Blue
Video Shielded No
Tweeter Type Hard-Dome
Tweeter Size (inches) 1
Midrange Size (inches) N/A
Woofer Size (inches) 5.25
Woofer Composition Aluminum
Woofer Surround Rubber
Power Range 40-100
Sensitivity 85 dB
Impedance (Ohms) 8
Frequency Response 79-28k Hz
Connector Type Post
Bi-amp Inputs No
Height (inches) 11-13/16
Width (inches) 7-7/8
Depth (inches) 11-1/16
Weight (pounds) 17.2
Mounting Bracket Included No
Recommended Stand Height (inches) 25-30
Parts Warranty 5 Years
Labor Warranty 5 Years

Product Research

Features

Metamaterial Absorption Technology (MAT): KEF teamed up with the Acoustic Metamaterials Group (AMG) to use Metamaterial Absoprtion Technology (MAT) in their LS50 Meta loudspeaker. Metamaterials are specially developed structures that use existing materials in such a way that they exhibit new, desirable properties that are simply not found in naturally occurring substances. A truly revolutionary technology, MAT is a highly complex maze-like structure, where each of the intricate channels efficiently absorbs a specific frequency. When combined, the channels act as an acoustic black hole, absorbing 99% of the unwanted sound that comes from the rear of the tweeter, eliminating the resulting distortion and providing a purer, more natural acoustic performance.

12th Generation Uni-Q Driver Array: The LS50 Meta bookshelf loudspeaker utilizes KEF's patented 12th Generation Uni-Q driver configuration, in which the tweeter is mounted at the acoustic center of the midrange cone. With both acting as a single point source, the sound is dispersed widely and evenly throughout the listening area allowing you to experience superbly defined and perfectly balanced stereo imagery with a wide "sweet spot". Using simulation and analysis tools and decades of accumulated in-house knowledge, KEF engineers developed a 12th Generation Uni-Q driver array, with a new cone neck decoupler and motor system that is precisely shaped to reduce high-frequency distortion in the mid-frequency driver. The result is reduced coloration, less distortion and a sound that is more transparent and life-like than previously possible. The same can also be said of bass performance, where LS50 Meta exceeds the expectations of a modestly proportioned bookshelf and standmount speakers to deliver room-filling sound with deep, articulate bass.

  • 1" Aluminum Vented-Dome Tweeter: The geometry of the tweeter dome matches that of the midrange cone to avoid disrupting the waveform. By smoothening high frequency response, this helps to account for the detailed and strikingly natural-sounding treble. The 1" aluminum vented-dome tweeter utilizes a Tangerine Waveguide to encourage the sound to radiate spherically for wider, more even dispersion so that everyone in the room enjoys the same superb sound quality. A large internal vent prevents potentially distorting high pressures from building up behind the dome in the critical vocal region, preserving all the nuance and fine detail of the original performance.
  • 5.25" Aluminum Cone Woofer: The 5.25" woofer uses an Aluminum cone that is light, stiff, and smooth for natural midrange and midbass sound. As well as allowing the midrange cone its full extension, KEF's ingenious Z-flex surround guides the sound from the tweeter across the surround without any disturbance or secondary radiation. Treble response is clearer and sweeter.

Advanced Cabinet Design: From the precision molded curved baffle to the solid, reinforced cabinet, every inch of LS50 Meta has been designed to perform. Every aspect of LS50 Meta has been considered for acoustic benefits and from a design perspective. The low-diffraction curved front baffle is subtly mirrored by the gently radiused rear panel, where both the port exit and speaker terminals have been elegantly recessed and softened visually.

  • Rigid Cabinet Bracing: The LS50 Meta’s extremely rigid cabinet is optimized for the best performance, with smooth curved surfaces that help radiate sound out across the baffle without any interference. Inside the cabinet, cross bracing and Constrained Layer Damping (CLD) combine to deaden internal vibrations. The result of such meticulous attention to detail is that LS50 Meta produces the lowest coloration of any speaker in its class.
  • Robust Curved Baffle: LS50 Meta's baffle is engineered from an injection-moulded Dough Moulding Compound (DMC), usually found int eh automotive industry. The LS50 Meta's low-diffraction, curved baffle is precision modelled around the Uni-Q driver array. It’s smooth curved surfaces help radiate sound out across the baffle without any interference from hard edges, which cause diffraction. The result is cleaner, more precise sound.
  • Flexible Port Design: Using Computational Fluid Dynamics (CFD), the port flare and profile of LS50 Meta's patented off-set port is calculated to delay the onset of turbulence, and the flexible port walls prevent resonances from coloring the midrange. This leads to improved clarity, with exceptional depth and detail. Two foam port plugs are included to seal the cabinet if the bass is too "boomy" because of speaker placement.

Note: No grilles are included with the KEF LS50 Meta.

Binding Post Terminals: On the back of the KEF LS50 Meta's speaker cabinet is a pair of heavy-duty binding post terminals to connect your speaker wire (sold separately). The binding post terminals will accept bare wire (up to 10AWG), pin-connectors, spade-lugs, and banana plugs (single only).

Mounting & Placement Options: The KEF LS50 Meta bookshelf loudspeakers can be simply mounted on a stand, shelf, table top, or other flat surface. The KEF S2 speaker stand (sold separately; see Accessories Tab) is custom-designed specifically for the LS50 Meta bookshelf speaker. Eight self-adhesive rubber feet (four for each speaker) are included to provide a secure non-slip, protective mounting surface. The feet add approximately 0.1875" to the overall height of the speaker.

  • The LS50 Meta bookshelf loudspeaker should be mounted 25" to 30" from the floor.
  • The speaker should be spaced 7.875" to 19.6875" from the rear wall, and 19.6875" to 39.375" from the side wall.
  • A pair of LS50 Meta speaker should be spaced 6' to 10' apart, and "toed" in slightly (0-15 degrees) to the main listening area.
Note: There is no included bracket, keyhole slot, or threaded isnert to wall-mount the speaker.

Loading accessories...

Customer Q&A

2 questions already asked

Q
Thoughts on using these as main speakers for a home theater setup with a decent receiver like a Marantz SR7015?
[ Sanjay  Jan 03, 2021 ]
1 answer
A
Of course . These speakers are definitely Main Speakers. Top of the line. You have 125 watts Per Channel ,more than enough.
[ Christopher  Jan 03, 2021 ]
Q
Can my Rega Brio integrated amp drive these?
[ Taylor  Dec 28, 2020 ]
9 answers
A
Yes the Brio works well. I am currently using the Elex R and it is a great pairing with the Meta and a step up from the Brio.
[ ROBERT C  Dec 29, 2020 ]
A
It depends on the kind of music you listen to, the size of your room and how loudly you listen. The meta's are relatively inefficient and the impedance is 4 ohms. They need a lot of power and ideally a high current amp to play loudly. My amp can deliver 500 Wpc into 4 ohms and drives them well in my 13' x 16' room. It can drive them to play loudly,well beyond their sweet spot, but if you like to listen loud or have a large room I am not sure the Rega would have enough power. If you have a smaller room and listen mainly to acoustic stuff it would probably be fine.
[ John Berdner  Dec 29, 2020 ]
A
The sensitivity of these speakers is 85db (lower than average by 3db). A 50 watts per channel amp can drive them, but you'll be higher up the volume scale for comparatively less output (and potentially more distortion). These are also 8 Ohm rated but bottom out at 3.5 which is a demand that some amps may struggle with. If your current speakers are higher sensitivity I think these may not compare well mated with your current amp. If your music content is not bass heavy and your normal volume level is low then they may be great! I'm driving mine with a peachtree nova 150.
[ JAMES G.  Dec 28, 2020 ]
A
My 2 cents... While the Brio may technically work with the Metas, there are definitely caveats and the Metas will only reach their full potential with higher power and higher end amps. That is a good and bad thing, IMO. First the downsides, as I see them. You won't be able to listen very loud with the Meta/Brio combo, and regardless the amp is going to run hot. Stereophile wrote of the Metas "The partnering amplifier needs to be comfortable driving 4 ohms" and of the Brio "Continued high-level use into 4 ohms may cause the case to exceed 40°C above the ambient temperature." Also, the Brio won't be able to extract the full bass/dynamic potential of the Metas, from what I can tell (I own the Metas, but not the Brio). However, since the Metas are true high end speakers with reference-grace performance, if you ever decide to upgrade anything else in the chain, the Metas will reward your efforts. Short answer: They do need more power to perform their best, but may work if you are fine listening in a small-ish room and/or at lower levels. Hope this helps, cheers!
[ DAVID  Dec 28, 2020 ]
A
What a coincidence! Short answer: yes, but you might not be pleased with the result, as suggested by a review I recently saw from the U. K., which said: "Case in point comes when I switch over to the Rega Brio. I love this amp and I have in the past run speakers up to and including the Focal Kanta No1 on it and thoroughly enjoyed the results. Its partnership with the KEF was - bluntly - not good" Personally, I drove the first-gen LS50s with the Rega up-model Elex-R (otherwise a very good amp) for awhile but found output from the combo to be too hard in the upper midrange for my ears. So I would advise: approach with caution, Taylor.
[ Mark  Dec 28, 2020 ]
A
You need at least 80-100 watt amp to drive these speakers. Good entry level is Rogue Sphinx integrated amp.
[ judy  Dec 28, 2020 ]
A
At 50 watts per channel the Rega amp should be fine. A more powerful amp would probably sound better.
[ Arthur  Dec 28, 2020 ]
A
I have no idea but they are great speakers. I run them with a Yamaha rxa3080 - Good Luck
[ GARY  Dec 28, 2020 ]
A
That might be pushing it. I have 2 sets of LS50's and 1 set of LS50 Meta's. 50wpc drives them but after hearing them on a much more powerful amp the difference is significant. I had a Emotiva TA100 and a Marantz 50wpc AVR driving 2 sets. I replaced the TA100 with a Cambridge Audio CX-81 and it was night and day. Granted a much better amp but they liked the wattage. I plugged them into my main setup which is a 500wpc Emotiva amp on a Yamaha RXA-3080 and they just like the wattage.
[ ERIC  Dec 28, 2020 ]

Loading articles...

TOP