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R3

Three-way stand mount

The R3 stand mount shares the same Uni-Q driver array as the range topping R11 in a full range design that defies expectations.

A true 3-way speaker the R3 has a powerful 165mm (6.5 in.) bass driver and a 125mm (5 in.) midrange driver with 25mm (1 in.) aluminium dome tweeter Uni-Q array that pushes performance to new extremes.

Priced as a PAIR of speakers.

Product Features
KEF R Series three way bookshelf or standmount speaker KEF R Series three way bookshelf or standmount speaker
TECHNOLOGY
THE SCIENCE OF SOUND
Uni-Q
The evolution of KEF's Uni-Q driver reaches its 12th generation in the R Series. Using simulation and analysis tools KEF’s engineers have been able to dramatically reduce colouration by cutting resonance in the tiny gaps between Uni-Q’s elements. The result is purer and more precise sound with stronger imaging.
KEF R Series 12th generation Uni-Q driver
Shadow Flare
The Shadow Flare is an innovative way to cut harmful high frequency cabinet diffraction. It's a carefully profiled transition that extends the waveguide effect of Uni-Q. The treble escapes naturally because the ‘shadow region’ stops it getting to the cabinet edges. The result is vastly improved fine detail.
KEF R Series shadowflare
Low Frequency Drivers
R Series bass drivers have a two-part structure with a shallow concave aluminium skin atop a paper cone. Combine this stiffness with the cone’s unique geometry and you get near pistonic movement for punch and speed. KEF has also increased linearity in the magnet system which means more impressive and impactful bass.
KEF R Series Woofers
Flexible Port Technology
When it comes to generating deep, articulate bass, port design is crucial. The R Series ports have innovative flexible walls. Using computational fluid dynamics the flare and profile of each port is calculated to delay the onset of turbulence and the flexible port walls prevent resonances from colouring the midrange.
KEF R Series flexible port reduce turbulence
Cabinet Bracing
A solid platform is imperative for great sound. The new R Series benefits from Constrained layer damping. This system utilises internal braces joined by a ‘lossy’ interface and is highly effective at dissipating unwanted vibrations that would otherwise artificially change the sound and music.
KEF R Series cabinet has been designed to dissipate unwanted vibrations
Microfibre Grilles
The R Series was created to sound its best with or without grilles. The microfibre grille design is a first for KEF and not only looks beautiful but has a negligible effect on performance. They continue the tone-on-tone approach to match the various cabinet finishes and the edges are burnished for a suede-like effect.
KEF R Series Microfiber grilles
Reviews

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Spec
Model R3
Design Three-way bass reflex
Drive Units Uni-Q Driver Array:
HF: 25mm (1in.) vented aluminium dome
MF: 125mm (5in.) aluminium cone
Bass Driver:
LF: 165mm (6.5in.) hybrid aluminium
Crossover frequency 400Hz, 2.9kHz
Frequency range (-6dB)
Typical in-room bass response (-6dB)
38Hz - 50kHz
30Hz
Frequency response (±3dB) 52Hz - 28kHz
Harmonic distortion (90dB, 1m) <0.3% 130Hz - 20kHz
Maximum output 110dB
Amplifier power (recommended) 15 - 180W
Nominal Impedance 8Ω (min.3.2Ω)
Sensitivity (2.83V/1m) 87dB
Weight * 13.5 kg (29.8 lbs.)
Dimension (H x W x D)
with terminal *
422.2 x 199.6 x 335.5 mm
(16.6 x 7.9 x 13.2 in.)
Finishes Black Gloss / White Gloss / Walnut

* Measurement per unit

** KEF reserves the right, in line with continuing research and development, to amend or change specifications. E&OE. **

Press and Awards
KEF R3 Wins Best Speakers 2019: Standmount
R3 Best Speakers 2019: Standmount
“Part of the company’s recently introduced premium R series, the R3s offer a large chunk of the pricier Reference 1’s engineering content and sonic performance at a fraction of the cost. And that's a winning combination. The R3s are brilliant all-rounders. They’re expertly sonically balanced and work well across a wide range of systems, but give them a top class feed and they will deliver a sound good enough to worry most standmounters below the two grand mark. This is one to buy with confidence.”
Year: 2019
Magazine / Issuing Body: What Hi-Fi
Country of Publication: United Kingdom
Product: R3 Bookshelf Speaker

KEF R3 Sound and Vision Review
R3 Bookshelf Speaker Review
“The sound with KEF's R5-based system is no less detailed..., but it offers high-end performance in a more controlled, polite way with music and ample excitement for both surround music and movies.”
Year: 2019
Magazine / Issuing Body: Sound and Vision
Country of Publication: United States
Product: R3 Bookshelf Speaker

KEF R3 What Hifi Review.
R3 Bookshelf Speaker Review
"We like the speaker’s clean appearance. But even here the decisions have been made on performance grounds. The shaped trim around the Uni-Q driver doesn’t just make the front panel look balanced by echoing the size of the larger bass driver; it also helps to reduce diffraction effects at the cabinet edges. That slim front looks smart and offers advantages in rigidity and dispersion."
Year: 2018
Magazine / Issuing Body: What Hi-Fi
Country of Publication: United Kingdom
Product: R3 Bookshelf Speaker
Downloads
R Series Brochure Open In New Window
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R Series Info Sheet Open In New Window
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R Series White Paper Open In New Window
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R Series User Manual Open In New Window
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Maintenance Guide for R Series Microfibre Grille Open In New Window
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Product Drawing Open In New Window
DXF File Download
DWG File Download

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