Mid-sized three-way Floorstanding Speakers
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.
An icon born from The Reference
Since 1961, KEF’s quest to reproduce immaculate sound has led to many acoustic innovations. The Reference is a case in point. Distilling decades of experience into an acoustic performance that is nothing short of exceptional, it is a design that continually sets the benchmark for loudspeakers and sound reproduction. Now the latest technological innovations have also made their way into the R Series.
Metamaterial Absorption
Absorbs 99% of unwanted sound for pure and natural sound.
At the heart of the R Series is Metamaterial Absorption Technology (MAT™). MAT™ is a highly complex maze-like structure that absorbs 99% of the unwanted noise from the rear of the driver, eliminating the resulting distortion and providing purer, more natural sound.
Uni-Q®
Sit anywhere, hear every details
A 12th generation Uni-Q® driver array with MAT™ is found in all seven models of the R Series. Uni-Q® acts as a single point source to disperse sound more evenly through the room. The result is the elimination of the limited ‘sweet spot’, therefore allowing everybody, wherever in the room they may be, to experience and enjoy the same natural, detailed sound.
Performance
Performance defined
The R Series is engineered to be acoustically exceptional. Every element of the design has been precisely tuned to deliver more detail and deeper insight, recreating the exhilaration of hearing an original music performance, with all the emotion and nuance that goes with it.
A Flare for Details
Derived from The Reference, 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.
Performance critical damping
A solid platform is imperative for great sound. The R Series benefits from constrained layer damping, a system that uses internal braces joined by a ‘lossy’ interface. This material converts unwanted vibration into heat, ensuring that the cabinet makes the only sound it needs to: the sound of silence
True bass definition
R Series bass drivers have a two-part structure with a shallow, concave, aluminium skin atop a paper cone. This stiffness, combined with the cone’s unique geometry, achieves a piston-like movement for punch and speed. The drivers’ magnet system creates a broad and uniform magnetic field which means more impressive and impactful bass.
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 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.
Versatility
Strength and versatility in numbers
With a choice of matching home theatre models to pair with, the stage is set for an immersive movie experience.
R Series offers a choice of floorstanding speakers, bookshelf speakers, centre channel speakers and accompanying home theatre models. Each one offers the finest sound KEF has ever delivered in its category, whatever the dimensions of the room or system configuration.
Multi Channel Home Theatre
With a choice of matching home theatre models to pair with, the stage is set for an immersive movie experience.
Dedicated microfibre grilles
The R Series has been engineered to perform with or without grilles. The dedicated microfibre grilles are crafted from multiple layers of material and have a suede-like feel. With 1801 precision-cut holes for each driver, performance is ensured even when the drivers are covered. 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: 2 x 165 mm (6.5 in.) hybrid aluminium cone |
Frequency range (-6dB) |
33 Hz - 50 kHz |
Frequency response (±3dB) | 48 Hz - 28 kHz |
Crossover Frequency |
400 Hz, 2.4 kHz |
Maximum output | 111 dB |
Recommended amplifier power | 15 - 250W |
Nominal impedance | 4Ω (min.3.2Ω) |
Sensitivity (2.83V/1m) | 88dB |
Weight | 29.3 kg |
Dimension (H x W x D) with terminal * |
1062 x 200 x 384 mm |
Dimension (H x W x D) with terminal with Plinth * |
1109 x 311 x 384 mm |
Finishes | Black Gloss / White Gloss / Walnut / Titanium Gloss Special Edition |