Flagship three-way floorstander
The largest model in the R Series combines four bass drivers and the latest generation Uni-Q for a powerful and refined sound
With hybrid aluminium bass drivers and a 12th generation Uni-Q for mid and treble the mighty R11is extremely capable. Using technology from KEF Reference it delivers clarity, finesse and serious bass.
With hybrid aluminium bass drivers and a 12th generation Uni-Q for mid and treble the mighty R11is extremely capable. Using technology from KEF Reference it delivers clarity, finesse and serious bass.
Guaranteed KEF quality
Each KEF Certified Refurbished Product undergoes a rigorous certification process to ensure both performance and quality are up to our exacting standards. They are also covered by the same warranty terms and conditions as our new products.
EXPLORE MOREThe Details
SPECIFICATIONS
Design
Three-way bass reflex
Driver Units
Uni-Q Driver Array:
HF: 25mm (1in.) vented aluminium dome
MF: 125mm (5in.) aluminium cone
Bass Driver:
LF: 4x 165mm (6.5in.) hybrid aluminium
HF: 25mm (1in.) vented aluminium dome
MF: 125mm (5in.) aluminium cone
Bass Driver:
LF: 4x 165mm (6.5in.) hybrid aluminium
Weight
37.7 kg (83.1 lbs.)
Dimension (HxWxD)
1249 x 200 x 383.5 mm (49.2 x 7.9 x 15.1 in.) with terminal*
Dimension (HxWxD)
1295.5 x 310.6 x 383.5 mm (51 x 12.2 x 15.1 in.) with terminal with Plinth*
Sensitivity
(2.83V/1m) 90dB
Crossover Frequencies
400Hz, 2.9kHz
Frequency Range
30Hz-50kHz (-6dB)
Typical In-Room Bass response
26Hz (-6dB)
Frequency Response
46Hz-28kHz (±3dB)
Harmonic Distortion
<0.3% 120Hz-20kHz (90dB, 1m)
Maximum Output
113dB
Amplifier Power
15-300W (recommended)
Nominal Impedance
8Ohms (min.3.2Ohms)
Finishes
Black Gloss / White Gloss / Walnut
KEF reserves the right, in line with continuing research and development, to amend or change specifications. E&OE. * Measurement per unit
AWARDS & REVIEWS
HI-FI NEWS
"They deliver a sound combining maturity and ease of listening with massive low-end punch when required, great imaging and fine detail. Choose one of the striking finishes to match your room, and just enjoy: this is high-end audio made easy." — 2018
Full reviewBEST FLOORSTANDING LOUDSPEAKER AVTECH MEDIA AWARDS 2019/20
Music comes to life with precise focus and detail thanks to that single-point Uni-Q driver, the performance underpinned by a robust and weighty bass register.’
Full review