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KEF R100 Bookshelf Speaker in Piano Black

R100 Bookshelf Speaker in Piano Black

Item # : KEF-R100B

Sales restrictions may apply. Please contact us for more information.

Passive Products: 5 Year Warranty | Electronic Products: 1 Year Warranty

R100 Bookshelf Speaker in Piano Black

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Featuring many of KEF’s latest innovations in premium hi-fi and home theatre loudspeaker technology, the all-new R Series makes genuine audiophile standards of entertainment more affordable than ever before. Stunningly fluent new Uni-Q driver arrays combine with potent new bass drivers and many ingenious refinements to create a rich, spacious sound image of such accuracy that it approaches the benchmark standards of KEF’s legendary Reference Series.


The All-New R Series | 01:23

The new Uni-Q MF/HF driver array is a masterpiece. Midrange response is amazingly fast and clean, thanks to a braced magnesium/aluminium alloy cone, with KEF’s Z-flex surround smoothing the transition to the front panel and a sturdy die-cast aluminium chassis that prevents resonance being transferred to the cabinet. At the acoustic centre of the midrange cone is the sophisticated vented tweeter that endows KEF Blade with such startlingly pure HF response. With a large neodymium magnet and a computer-optimised dome structure so stiff that it operates pistonically over its entire working range, the upper registers are articulated with flawless precision – and to capitalise on Uni-Q’s point source characteristics, KEF’s ‘tangerine’ waveguide helps to disperse the higher frequencies evenly across a wider angle to flood the room with an intricate and refreshingly natural soundfield. Operating together as a single, perfectly integrated voice, the array as a whole delivers a sweet, accurate sound of unprecedented clarity.

The new bass driver is equally impressive. The combination of a massive vented magnet assembly and a large, lightweight aluminium voice coil driving a light, stiff and strong hybrid cone assures clean, deep and uncompressed bass output with superb dynamics and power handling.


The R Series product introduction | 6:08

Inside the cabinets (in a choice of classic Piano Black and real wood veneer finishes in Rosewood or Walnut) every single component confirms KEF’s technology leadership. Computer-designed crossovers allow the level of each driver to be fine-tuned for a smoother, flatter response. Constrained layer damping panels prevent cabinet vibration from muddying the mid-range and bass – even the airflow through the reflex ports is managed using computational fluid dynamics to optimise acoustic integrity.


With nine timelessly handsome models including three assertive floorstanders, two bookshelf speakers, two fully-specified centre channels, dipole surrounds and a matching subwoofer, the all-new R Series represents a decisive step forward in the enjoyment of music or film. By incorporating the high end technologies of KEF Blade in a classically elegant format, it gives serious audiophiles phenomenally accurate reproduction that neither adds to nor subtracts from the original recording: refined, spacious and exquisitely detailed. For those whose appreciation of true audio excellence outstrips their bank balance, it’s the perfect buy.

Product Details
Brand KEF
Color Piano Black
Condition Notes

Sales restrictions may apply. Please contact us for more information.

Warranty Passive Products: 5 Year Warranty | Electronic Products: 1 Year Warranty
Weight (lb) 14.5500
Height (In) 11.02
Width (In) 7.09
Length/Depth (In) 11.38
Weight (Kg) 6.6
Height (mm) 280
Width (mm) 180
Length/Depth (mm) 289
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The KEF R100 is a masterpiece in miniaturisation. Fast, clean and agile, with a low-end performance you would expect from a speaker double its size or with a dedicated LF driver, the R100 has a brilliantly designed full range Uni-Q driver array that makes the smallest R Series bookshelf speaker an astonishing performer.

Model R100
Design Two-way bass reflex
Drive Units Uni-Q driver array:
HF: 25mm (1in.) vented aluminium dome
LF/MF: 130mm (5.25in.) aluminium
Frequency range (-6dB) 49Hz - 45kHz
Frequency response (±3dB) 56Hz - 28kHz
Crossover frequency 2.5kHz
Amplifier requirements 25 - 100 W
Sensitivity (2.83V/1m) 86dB
Harmonic distortion
2nd & 3rd harmonics (90dB, 1m)
<0.4% 150Hz-20kHz
Maximum output 107dB
Nominal impedance 8Ω (min. 3.2Ω)
Weight 6.6kg (14.5lbs.)
Dimension (H x W x D)
(with grille and terminal)
280 x 180 x 289 mm

(11 x 7.1 x 11.4 in.)
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Amazingly fast and clean mid-range response. Startlingly pure high frequencies. All operating as a single perfectly integrated voice to deliver sweet, accurate sounds of unprecedented clarity.

The new Uni-Q driver array is nothing short of a masterpiece.

Unlike conventional speakers, the mid-range cones are rigid magnesium/aluminum constructions that reduce breakup problems. The new mid-range Z-flex surround smoothes the tweeter transition to the front baffle, which results in undistorted high frequencies.

Large voice coils increase power handling and dynamics, reducing distortion and delivering exceptional vocal clarity.

Venting the tweeters reduces pressure behind the dome, increasing midrange bandwidth and lowering distortion. Upper registers are articulated with flawless precision. KEF’s tangerine waveguide helps disperse higher frequencies evenly across a wider angle to flood the room with a sophisticated, refreshingly natural sound field.


Dynamic, uncompressed and undistorted bass of heart pounding clarity envelops you, striking deep emotional chords. Your soul will awaken. And the earth will move.

Bass driver
Massive, vented magnet assemblies and large aluminum voice coils drive the lightweight yet stiff, strong hybrid cones. Bass output is faster, cleaner and more accurate. Satin anodised elements contribute to the unit’s elegance, while the diameter of the trim ring accentuates a visual sophistication that belies the speaker’s awesome power.

Force cancelling drivers avoid cabinet agitation. Opposing reactive forces are nullified by rigidly mounting the low frequency drivers back-to-back.

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Designed from the ground up, the R series is a towering leap forward that creates a new dimension in sonic authenticity.

The geometry and bracing of the enclosure optimises vibrational behavior, reducing secondary radiation from cabinet walls for a cleaner sound. Damping panels further minimize cabinet resonance and colouration.

Front baffles are clean with no visible screws. Grilles are fixed magnetically. Available in real Walnut and Rosewood veneers, or highly polished Piano Black, the R Series complements the home as much as it respects the music.


A little finesse goes a long way to delivering a big impact. Every aspect of the R Series has been considered in the creation of a superb audio experience.

Adjustable die cast aluminum feet support steel spikes, with integrated locking knobs for easy height adjustment. Nickel plated bi-wire connectors with terminal linking control allow all standard connection methods and provide easy, reliable connection.

The geometry of the reflex ports has been tuned to minimize turbulence at high levels, reducing port noise and low frequency compression.


The R Series presents the high-end technologies of KEF Blade in a timeless, elegant format. Serious
audiophiles can now enjoy phenomenally accurate reproduction that neither adds nor subtracts from
the original recording. Indulge in a near-Reference experience at a price that will also be music to your ears.

Refined, spacious and exquisitely detailed, you won’t just hear music the way it was intended it to be… you’ll live it, feel it and love it.

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AVTech Media - Best High-End Speaker System Award
Year: 2013
Magazine / Issuing Body: AVTech Media
Country: United Kingdom
Product: R Series
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What Hi-Fi? Sound & Vision - Best traditional package £2500-£3500
"It looks gorgeous and sounds fantastic - what more could you want"
Year: 2013
Magazine / Issuing Body: What Hi-Fi? Sound & Vision
Country: United Kingdom
Product: R100 5.1
• Visit the What Hi-Fi? site for full review
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Home Cinema Choice – ‘High End Hero’ Award
‘These are a serious contender for high-end dedicated cinema room and will give absurd amounts of delight for years while you replace the TV every Winter. They tick all the boxes: scary, pretty, cool, posh, dynamic, delicate…’
Year: 2013
Magazine / Issuing Body: Home Cinema Choice
Country: UK
Product: R900 7.1 AV System
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AVForums – Highly Recommended Award
‘KEF certainly seem to be in a rich vein of form in recent times. In terms of the R Series package tested here, I'm struggling to think of anything that can really be called a weakness.’
Year: 2013
Magazine / Issuing Body:
Country: UK
Product: R700 5.1 AV System
• Click here to read the review in full
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What Hi-Fi? Sound & Vision – 5 star review
“Integration is stunning across the front three channels, and dialogue is crisp and clear with a startling directness”
Year: 2012
Magazine / Issuing Body: What Hi-Fi? Sound & Vision
Country: United Kingdom
Product: R100 5.1 System
• Visit the What Hi-Fi? site for full review
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High Quality and Design
Year: 2012
Magazine / Issuing Body: Plus X Award
Country: Germany
Product: R Series
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Home Theater Top Picks
"...It’ll probably surprise no one that the R Series is worthy of its audiophile lineage. The series is beyond excellent, moving aggressively into I-could-live-this territory. I’m struck by how much this system excelled in the human dimension..."
Year: 2012
Magazine / Issuing Body: Home Theater
Country: USA
Product: R300 Speaker System
• Download full review
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Grand Prix and Copper Award among all categories
Year: 2011
Magazine / Issuing Body: Audio Accessory Winter 2011
Country: Japan
Product: R Series2

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