SKU: 34795045833

KEF R Series R11 Meta Three-way Floorstanding Speakers

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Description

KEF R Series R11 Meta Three-way Floorstanding SpeakersFlagship three way floorstanding speakers The R11 Meta is the largest floorstanding model of the R Series. For a breathtaking listening experience, its combination of 12th generation Uni Q driver array with MAT and four 6. 5 hybrid aluminium bass drivers allow it to pick out the subtle details of a recording, while also delivering raw power and agility. R Series HiFi Speakers Now with Metamaterial Absorption Technology Since 1961, KEF has strived to

Flagship three-way floorstanding speakers

The R11 Meta is the largest floorstanding model of the R Series. For a breathtaking listening experience, its combination of 12th generation Uni-Q® driver array with MAT and four 6.5” hybrid aluminium bass drivers allow it to pick out the subtle details of a recording, while also delivering raw power and agility.


R Series
HiFi Speakers

Now with Metamaterial Absorption Technology

Since 1961, KEF has strived to reproduce pure sound precisely as it was meant to be heard. Decades of experience in acoustic innovation and the quest for music perfection come together in the R Series to deliver sound with more detail and deeper insight, sound that ignites excitement every time you experience it.

The R Series is a direct beneficiary of the technological innovations developed for The Reference, the class-leading series that continually set the benchmark for loudspeakers and sound reproduction. Combining with bespoke technologies, the R Series delivers an exceptional acoustic performance. The revolutionary Metamaterial Absorption Technology (MAT) has been incorporated into the latest iteration of the R Series, and the 12th generation Uni-Q® driver array has been refined to maximise the impact of this technological advance and ensure the best possible performance.

The result is an exceptional seven-model range of loudspeakers, engineered to deliver with exquisite detail and incredible insight. Whether your taste lies with traditional two-channel HiFi, multi-channel home theatre or both, the R Series reveals levels of detail that must be heard to be believed.

Revolutionary sound absorption with MAT™

At the heart of the latest R Series is Metamaterial Absorption Technology (MAT), a revolutionary innovation that takes the performance of the 12th generation Uni-Q driver array to another level in terms of accuracy and clarity.

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.

Superior KEF sound

A bespoke 12th generation Uni-Q driver array with MAT is found in all seven models of the R Series and delivers an incredibly detailed performance. It’s the result of decades of accumulated in-house knowledge and the application of cutting-edge simulation and analysis tools. The developments are many and all play a part in R Series’ exceptional performance.

The Uni-Q driver array has been redesigned to maximise the performance improvements that MAT delivers. The conical waveguide that couples the tweeter dome to the new metamaterial absorber has been specially
designed for the bespoke driver based on its depth. The re-engineered tweeter gap damper strategically places two rings of porous material to tame the resonances and imperfections effectively, thus greatly improving detail and clarity.

The ultra-low distortion midrange motor design uses a copper ring embedded into the motor gap to minimise inductance and variation of inductance with coil position. This lowers the midrange THD and reduces thermal compression, leading to improved efficiency.

The Flexible Decoupling Chassis first used on the latest Blade and The Reference loudspeakers is employed on the Uni-Q driver array to dramatically reduce coloration of the sound caused by midrange vibration transmission to the cabinet, while also solving the problem of additional sound created by the driver basket that occurs with traditional decoupling methods. It works by decoupling the massive midrange motor from the Uni-Q chassis, dissipating its vibration before it can travel to the cabinet and be radiated as unwanted sound.

The surround on the 12th generation Uni-Q driver array allows for longer excursion without causing diffraction and extending the frequency range of the midrange. The contours of tweeter dome, midrange cone and surround are all computer-optimised to ensure a perfectly smooth transition to the cabinet. These innovations combine to ensure the R Series sound even more transparent and life-like than previously heard on this already exceptional range.

Shadow Flare for improved clarity

Shadow Flare is another feature originally designed for The Reference. It reduces harmful cabinet diffraction, allowing the 12th generation Uni-Q with MAT to work to its highest potential. Shadow Flare is a precision designed surface that extends the waveguide effect of the Uni-Q driver array. This means the tweeter no longer has line of sight of the cabinet edges, creating a ‘shadow region’ at the points where the potential for diffraction is highest, minimising the acoustic impact to negligible levels. The result is improved clarity and the reproduction of the fine details that make listening such a thrilling experience. The subtle nuances of plucked strings, the changes of vibrato in a voice, all of these are clearer on the R Series.

Deep, agile bass

Bass is a vital element of performance, and the low-frequency drivers of R Series have been engineered with acute care and precision. They are built using a two-part structure, where a shallow concave aluminium skin sits atop a paper cone. This stiffness combined with the cone’s unique geometry reduces unwanted resonances and delivers the pistonic movement that makes these drivers time so well. The drivers’ magnet system creates a broad, uniform magnetic field, while the suspension reduces harmonic distortion for a clean, precise sound. The result is exceptionally deep and agile bass that reveals every last bit of detail and punch available in the deep.

Flexible port for cleaner bass

We only want to hear the drivers, not the resonances or turbulence created by a bass port. The R Series’ ports feature innovative flexible walls. Using computational fluid dynamics, the flare and profile of each port is calculated to delay the onset of turbulence, while the flexible port walls prevent longitudinal resonances from colouring the midrange. The advantages of this approach are twofold: better bass, and cleaner sound further up the frequency range in the vital lower midrange area.

Performance critical damping

Powerful drivers can easily cause the cabinet walls to make noise of their own - noise that was never in the recording in the first place. Working alongside the bespoke internal bracing layout, KEF’s Constrained Layer Damping is a sophisticated bracing system that ensures the cabinet stays inert by connecting the bracing to the drivers and cabinet by a lossy interface. This material converts vibration into heat, ensuring that the cabinet makes the only sound it needs to - the sound of silence.

Strength and versatility in numbers

The R Series comprises seven models, providing listeners with a great versatility when building their ideal HiFi system. Whether that’s a stereo or a home theatre set up, they can do so with the confidence that they will enjoy an immersive, realistic sound experience.

Stereo for music

A trio of floorstanding speakers including R11 Meta, R7 Meta and R5 Meta and a bookshelf speaker R3 Meta reproduce high-fidelity stereo sound for your favourite music irrespective of the dimensions of the listening space. Each of them will allow you to discover depth and detail in your music you never knew existed – from the scrap of plectrum on guitar string to the sense of emotion and atmosphere in a live performance.

Home Theatre

The two centre speakers including R6 Meta and R2 Meta, which can also be used in LCR configuration, deliver brilliant dialogue clarity to the home theatre experience in different room sizes. Identically sized Uni-Q arrays are deployed on the centre speakers and all other models in the series. This creates a consistent sound character, therefore ensuring that the focus is entirely on the film and not the equipment around the room.

If you want to experience the glorious experience that is Dolby Atmos, then the R8 Meta surround speaker is an ideal addition to a surround system. It can be either wall-mounted or placed on top of another R Series loudspeaker, for sensationally immersive sound. With the addition of any of KEF’s class-leading subwoofers, the whole cinematic experience is felt, from the deepest impact to the softest whispers.

Perfecting every detail

At KEF innovative engineering goes hand-in-hand with great design, and our product design team strives to ,create deceptively simple, elegant loudspeakers. While every design choice KEF makes is driven by acoustic performance, visual appeal is vitally important and the R Series proves that a loudspeaker can perfectly integrate into the room, both sonically and aesthetically.

This understated design aesthetic is complemented by carefully selected colour options. Conceived to be at home in either traditional or modern interiors, each model in the R Series comes in a choice of two sleek gloss finishes: Black Gloss, White Gloss and a classic wood veneer finish: Walnut. Two models also have their own signature finish option in the form of the Titanium Gloss Special Edition for R7 Meta and the Indigo Gloss Special Edition for R3 Meta.

The R3 Meta also features threaded insets that allow the speaker to be mounted securely onto the top of the S3 Floor Stands, which also boast integrated cable management and a mass-loadable column.

Dedicated microfibre grilles

The R Series is engineered to perform its best with or without grilles. The dedicated microfibre grilles are crafted from multiple layers of material and the edges are burnished for a suede-like feel. With 1801 precision-cut holes for each driver you experience fantastic performance even when the drivers are covered, which is great news if you feel the need to protect them. The magnetic fixings provide a secure and precise fit, in keeping with the clean styling of the R Series.

Specifications

DESIGN
Three-way bass reflex
DRIVE UNITS
Uni-Q Driver Array:
HF: 25 mm (1 in.) vented aluminium dome with MAT
MF: 125 mm (5 in.) aluminium cone
Bass Unit:
LF: 4 x 165 mm (6.5 in.) hybrid aluminium cone
CROSSOVER FREQUENCY
330 Hz, 2.5 kHz
FREQUENCY RANGE (-6dB)
30 Hz - 50 kHz
TYPICAL IN-ROOM BASS RESPONSE (-6dB)
26 Hz
FREQUENCY RESPONSE (±3dB)
46 Hz - 28 kHz
HARMONIC DISTORTION (90dB, 1m)
<1% 33 Hz and above
<0.5% 80 Hz - 20 kHz
MAXIMUM OUTPUT
113 dB
AMPLIFIER REQUIREMENTS
15 - 300W
NOMINAL IMPEDANCE
4 Ω (min. 3.2 Ω)
SENSITIVITY (2.83V/1m)
90 dB
WEIGHT *
36.5 kg (80.5 lbs)
DIMENSION (H x W x D) WITH TERMINAL *
1249 x 200 x 384 mm (49.2 x 7.9 x 15.1 in.)
DIMENSION (H x W x D) WITH TERMINAL WITH PLINTH *
1296 x 311 x 384 mm (51.0 x 12.2 x 15.1 in.)
FINISHES
Black Gloss / White Gloss / Walnut
Shipping Notes
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Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
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SKU: 34795045833

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4.1 ★★★★★
Based on 11 reviews
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Product Reviews
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Vikki Lynn
Pawtucket, US
★★★★★ 5
Unraveling Fate and Fae: A Captivating Journey in "Queen of Roses"
Format: Kindle
"Queen of Roses" by Briar Boleyn is a dark fantasy romance that masterfully combines elements of myth, magic, and romance with a captivating King Arthur retelling infused with a Fae twist. From its intricately woven plot to its compelling characters, this novel delivers an immersive reading experience that will leave readers eagerly anticipating the next installment. At its core, "Queen of Roses" is an enchanting tale of forbidden love and destiny, featuring an exceptionally slow-burn romance that ignites with the intensity of an enemies-to-lovers trope. Against a backdrop of magic and mythical creatures, the story unfolds with tension, banter, and forced proximity, drawing readers into a world filled with love, friendships, self-discovery, and betrayal. While the novel excels in world-building, character development, and plot intricacies, some readers may yearn for a bit more fire and spice in certain aspects of the narrative. However, the promise of future developments in the series offers hope for an even more dynamic and engaging story to come. I know I personally cannot wait to get into book 2. With a cliffhanger ending that leaves hearts racing and minds reeling, "Queen of Roses" succeeds in immersing readers from start to finish. Its dark and twisted fantasy elements are expertly balanced with moments of adventure, action, and unexpected twists, keeping readers on the edge of their seats until the very last page. As the story delves into complex themes and explores the depths of its characters' struggles and desires, it's important to note that "Queen of Roses" may contain triggering content. Readers are advised to check the trigger warnings before diving into this captivating tale. Overall, "Queen of Roses" is a must-read for fans of dark fantasy romance, offering a mesmerizing journey that will leave readers eagerly anticipating the next chapter in the series. With its lush prose, intricate storytelling, and unforgettable characters, this novel is sure to leave a lasting impression on all who venture into its enchanted world. I want to extend a heartfelt shoutout to the author for granting me the opportunity to dive into "Queen of Roses" through NetGalley. It has been an absolute pleasure to explore the captivating world and characters crafted with such skill and imagination. Thank you for entrusting me with this glimpse into your enchanting world.
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Reviewed in the United States on April 1, 2024
L
Verified Purchase
Luna Fae
Carnegie, US
★★★★★ 4
Right from the start, I was drawn in by the prologue!!!
Format: Paperback, Format: Paperback
Queen of Roses (Blood of a Fae #1) by Briar Boleyn Genre General Fiction ( Adult), Romance, Sci-Fi & Fantasy, Dark Romance “More primordial than the stars. My name was on his lips as he promised unspeakable darkness to any who came between us.” Right from the start, I was drawn in by the prologue!!! I’m a big fan of “touch her, and you die” vibes, but I mean, what’s also not to love about a unique Arthurian retelling with gender twists, a treacherous royal court, a dangerous quest, magical Fae & mystical monsters, entwined with a bit of spice! Morgan, Princess of Pendrath and true heir to the throne has spent most of her life dimming her light to feel safe and to make others comfortable. She is treated as an outcast in the court and repressed by her family due to the blood of the Fae within her and forced to join the Temple of the Three as a priestess in training to one day replace Merlin. Her brother, King Arthur, who reminds me of Joffrey from Game of Thrones, later tells her that he has other plans and offers her a choice of the Temple or to marry her off for political gain, unless… that is, she can journey through the great unknown and return with a long-lost fae weapon with enchanted powers known as Excalibur. Her quest begins with a roguish crew that includes the mysterious, arrogant, and heart-tuggingly handsome Captain of the Royal Guard, Kairos Draven, whom she can’t decide if she wants to stab or indulge in pleasure with. Along the way are plenty of surprises, mystical creatures, and betrayal, all while Morgan uncovers more of the truth about herself and who she can trust. This book had intriguing storylines and lovable characters that kept me turning pages and wanting more. I can’t wait to see how it all unfolds and comes together in book 2, Court of Claws, which I just started reading!! Read if you’re into- Dark Fantasy/Romance Slow–Burn Question Everything Magic and Action Fae Arthurian Legend Stabby/Broken FFC Morally Gray MMC Forced Proximity Queen of Roses is perfect for Holly Black, Jennifer L. Armentrout, and Sarah J. Maas fans. Please check the trigger warnings page in the table of contents before reading this book.
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Reviewed in the United States on August 16, 2023
A
Verified Purchase
Amanda Greathouse
Massapequa, US
★★★★★ 3
3.5 stars, A little boring to say the least.
Format: Kindle
Wow so I'm not sure where to begin on this one. This was a very different take on the legend of Arthur and Excalibur. This is told from the point of view of Morgan the sister of Arthur. Honestly the first 50% of this book is world building and character building which unfortunately was super boring for me. Morgan to me was a female MC that had a hard time in believing in herself. Sometimes taking too long to understand exactly what was going on around her. Draven was also a different male MC, like I couldn't put my finger on him and what he was all about. It was not until the last 10% of the book did we get some answers on the mystery that is Draven. The other 50% of the book centered around this big journey with everyone having a different motive. We see a spark of magic around this time that had me excited but then we never expanded upon that and what it could mean for the female MC. I feel like I want to read the second book just to see where this goes, but the spice was probably a 2 out of 5. Side characters are ok, Lancelet was fun but I almost felt like I wanted more.
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Reviewed in the United States on September 13, 2023
K
Verified Purchase
Krystina
Massapequa, US
★★★★★ 5
A bewitching retelling of Arthurian legend!
Format: Kindle
In a land where the Fae have nearly become only a legend and those who still posses even a morsel of the blood are few and far between, Morgan finds herself cast aside by most of society due to her rumored half-Fae lineage, including her brother, King Arthur. With the kingdom at the brink of war, Arthur entrusts her with a quest to retrieve a Fae weapon of legendary power: the sword of Perun, Excalibur. Accompanied by men she loathes, Captain Kairos Draven and Ragnar Whitehorn, she embarks on her long and unbeknownst perilous journey, only to find that things she once believed to be myth are in fact very real. With devastating twists, omitted truths, witty banter and fierce action, Queen of Roses leaves you begging to know more about the secrets of Aercanum! Wow, wow, wow! Going into this story, I did not realize that it was going to be a retelling of Arthurian legend, especially not one with a fantastical twist! The unique spin almost gave me The Witcher vibes and I think adding Fae into the mix was quite interesting. I knew the basics of the legend but after reading this book, it has piqued my interest and makes me want to learn more about it. My attention was snatched as soon as I finished the prologue and I knew that I was going to devour this story. I truly enjoyed the gender swaps and even how Arthur was portrayed as villainous. Morgan’s past and even her parts of her present is absolutely heartbreaking, and I felt for her at times. I can only recall one other book that made me hate characters the way I despised Florian and Arthur, leaving me with my blood boiling and feeling disgusted. Even after finishing the book, Draven is still a mystery to me and I cannot figure out how to feel about him. I guess they just means that the author did an excellent job at conveying each character’s persona! The rich world building and imagery made it easy for me to visualize the places that the group visited along their journey. I am truly engulfed in this story and I cannot wait to see wait fate awaits Morgan and how the Fae will be even more incorporated in the next book!. I received a free copy of this book and am voluntarily leaving a review.
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Reviewed in the United States on August 11, 2023
T
Verified Purchase
Tiana
Whiting, US
★★★★★ 4
Enchanting
Format: Kindle
"Queen of Roses" by Briar Boleyn is a delightful and refreshing reimagining of the classic tale of King Arthur, with a captivating twist that places the spotlight on Morgan, a character who has often been overshadowed in traditional retellings. Boleyn's creative decision to shift the narrative perspective to Morgan breathes new life into the story, offering readers an intriguing and compelling look at the Arthurian world from an entirely different angle. One of the most commendable aspects of this book is its incorporation of Fae elements, which adds an enchanting layer of magic and mystery to the already familiar Arthurian setting. Boleyn skillfully weaves the world of the Fae into the narrative, creating a captivating backdrop against which the events of the story unfold. This addition not only adds depth to the world-building but also provides ample opportunities for twists and turns that keep readers thoroughly engrossed. However, while the book boasts numerous strengths, it does have one noticeable flaw: the characterization of Morgan. While it is reasonable to create a flawed and complex protagonist, it appears that at times, Morgan's character becomes overly difficult and hard to relate to. Her persistently negative perception of one of the main male characters, who is a potential love interest, despite his efforts to support and assist her, may come across as somewhat irrational and could test the patience of some readers. Striking a balance between a strong, independent character and one who can recognize genuine support and affection could have enhanced the overall reader experience. Nonetheless, the allure of "Queen of Roses" lies in its innovative approach to the Arthurian legend and its skillful blending of fantasy elements into a familiar narrative. Boleyn's evocative prose draws readers into a world where magic, destiny, and fate entwine, leaving us eager to uncover the mysteries that unfold within the pages. I received a free copy of this book via Booksprout and am voluntarily leaving a review.
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Reviewed in the United States on July 28, 2023

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