KEF R7 META

KEF R7 META

53 990,-
FRI FRAKT
 
Fjernlager (1-3 virkedager)

Tester og omtaler (1)

KEF R7 META

The mid-sized floorstanding member of the R Series is as powerful as it is flexible. Its 12th generation Uni-Q® driver array with MAT™ ensures a crystal-clear performance with music and movies alike, while its two 6.5” hybrid aluminium bass drivers deliver accurate, dynamic bass.

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 Technology1 (MATTM) 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.
 
Summary of features
 
• Metamaterial Absorption Technology (MATTM)
eliminates 99% of high-frequency distortion for
pure, natural sound
• Bespoke 12th generation Uni-Q with MAT driver
array for exceptional acoustic accuracy
• Refined tweeter gap damper tames resonances
for improved detail
• Flexible Decoupling Chassis prevents unwanted
vibrations for better clarity
• Enhanced crossover design fine-tuned the signal
path for pristine, clean sound
• Seven models: R11 Meta, R7 Meta, R5 Meta,
R3 Meta, R6 Meta, R2 Meta, R8 Meta
• Available in Black Gloss, White Gloss and Walnut
finishes, plus an exclusive Titanium Gloss Special
Edition for R7 Meta and Indigo Gloss Special
Edition for R3 Meta
• Microfibre grilles offer the perfect balance
between driver protection, sonic performance and
aesthetics
• S3 Floor Stand for R3 Meta is available as
separate item
 
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 scrape of a plectrum on guitar strings 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 inserts 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.

Tekniske data

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: 2 x 165 mm (6.5 in.) hybrid aluminium cone
CROSSOVER FREQUENCY
400 Hz, 2.4 kHz
FREQUENCY RANGE (-6dB)
33 Hz - 50 kHz
TYPICAL IN-ROOM BASS RESPONSE (-6dB)
27 Hz
FREQUENCY RESPONSE (±3dB)
48 Hz - 28 kHz
HARMONIC DISTORTION (90dB, 1m)
<1% 76 Hz and above
<0.5% 110 Hz - 20 kHz
MAXIMUM OUTPUT
111 dB
AMPLIFIER REQUIREMENTS
15 - 250W
NOMINAL IMPEDANCE
4 Ω (min. 3.2 Ω)
SENSITIVITY (2.83V/1m)
88 dB
WEIGHT *
29.3 kg (64.6 lbs)
DIMENSION (H x W x D) WITH TERMINAL *
1062 x 200 x 384 mm (41.8 x 7.9 x 15.1 in.)
DIMENSION (H x W x D) WITH TERMINAL WITH PLINTH *
1109 x 311 x 384 mm (43.7 x 12.2 x 15.1 in.)
FINISHES
Black Gloss / White Gloss / Walnut / Titanium Gloss Special Edition