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Developed for KEF’s flagship The Reference, a suite of the latest technologies has now made its way into the new generation of the R Series. Whether in stereo for music or in a home theatre set up the R Series makes exceptional acoustic performance more accessible. Now with the groundbreaking Metamaterial Absorption Technology, the R Series reveals exquisite detail and incredible insight: truly an experience to savour.

Performance Redefined

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.

Innovation

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.

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 THE BOX
R11 Meta
Microfiber grille
Plinth and spike accessories
Port bungs
User manual and warranty information

*Measurement per unit

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