KEF Reference 5 Silver Satin Walnut, Reference 5 Blue Ice White, Reference 5 Copper Black Aluminium, Reference 1 Blue Ice White, Reference 1 Luxury Gloss Rosewood kef_reference_Info_sheet_en_artwork.pdf
...Page 1
THE REFERENCE
The perfect reproduction of recorded sound is what KEF Reference has
always stood for. Nothing less. And after four decades of continuous
innovation and development, the name is rmly established as the yardstick
of high-end acoustic engineering.
KEF led the world in the use of computerised ‘total system design’ to
create better loudspeakers. By pioneering the use of these powerful
analytics, KEF engineers matched pairs of speakers to within half a decibel.
Because this exact pair matching delivers perfect stereo reproduction,
they won instant acclaim for their superior acoustic precision. The name
‘Reference’ was born.
A class apart
With six models encompassing two elegant three-way floorstanders,
a formidable three-way bookshelf speaker, two three-way centre
speakers and an awesome 1000-watt subwoofer, The Reference
combines phenomenal high-fidelity performance with complete
multichannel versatility.
At the heart of The Reference is arguably the greatest innovation in the
history of modern loudspeaker design: KEF’s ‘point source’ Uni-Q MF/HF
driver array. With a state-of-the-art 25mm (1in.) vented aluminium dome
tweeter at the exact acoustic centre of a highly sophisticated 125mm (5in.)
midrange driver, both act as a single source that oods the listening space
evenly with a awless natural soundeld, no matter where you sit.
The powerful 165mm (6.5 inch) LF driver designed to complement KEF’s
latest Uni-Q point source array is in a class of its own. Clever engineering
and meticulous attention to design detail delivers a deeply rewarding
experience, which blends seamlessly with Uni-Q’s immaculate midrange
and treble response.
The powerful 1000W subwoofer boasts two 500W Class D ampliers,
each driving a 225mm (9 inch) long-throw, ultra-low distortion driver. KEF’s
ingenious force-cancelling technology allows both drive units to operate
more efficiently, giving noticeably greater definition to low frequency
effects. If you haven’t experienced a truly great subwoofer, you’ll be
amazed what a dierence it makes to your viewing and listening pleasure.
Whether for a traditional speaker system or multichannel home theatre
set-up, the experience is so startlingly realistic that you feel as if you’re
actually there. Mind-blowing special effects, from the opening titles
onwards. Breathtaking dynamics. Consummate musicality, from overture
to coda. And the level of accuracy that reveals details you’d never
noticed before, even in favourite tracks. They’re easy to live with too –
undemanding in terms of position, and easy to ne tune for your listening
area through the innovative, exible port tube technology.
Total attention to detail
Every Reference speaker exude the sense of sheer quality that comes
from being hand built by KEF’s master technicians in Maidstone, Kent.
Designed using nite element analysis to determine the ideal shape and
bracing geometry, the expertly engineered cabinets are finished in a
sumptuous deep piano gloss or richly detailed, pair-matched wood veneers
to complement the strikingly distinctive front bae, which is engineered to
eliminate anomalies caused by diraction.
The bespoke Performance stands for Reference 1 and Reference 4c
share the same handsome design aesthetic and careful attention to detail
as the loudspeakers themselves. Precision-engineered plinths and spike
sets ground the stands as solidly as the floorstanders to prevent any
vestigial cabinet vibrations from being transmitted through the oor of the
listening area.
KEF’s obsession with absolute quality remains, as does the immaculate
craftsmanship; the styling has evolved so as to be as fresh and
contemporary now as their predecessors were then. But above all, for
the serious audiophile who aspires to the perfect enjoyment of movies or
music, there’s one name that still towers above the rest.
The Reference. It speaks for itself
Page 2
Two drivers, a single point
At the heart of The Reference is the Uni-Q™ point source driver
array. A state-of-the-art vented aluminium dome tweeter at the
exact acoustic centre of a highly sophisticated midrange driver
that delivers awless natural sound across a wider listening area.
Computer-modelled perfection
Hand nished in pair-matched wood veneers, The Reference
cabinets have computer-optimised bracing geometry to minimise
secondary radiation from the sides and Constrained Layer
Damping to turn what little vibration is left into heat.
A strong foundation
Clean, rich and articulate bass is the foundation of great stereo
or multichannel sound. KEF's Reference Series bass driver has a
massive vented magnet assembly, a large aluminium voice coil and
an exceptionally light and sti alloy cone. Whatever the volume,
dynamics and power handling are superb.
The smallest details, revealed
Shadow Flare drastically reduces harmful cabinet diraction,
allowing the Uni-Q to work at its highest level. A precisiondesigned surface extends the waveguide eect of Uni-Q for
improved clarity, particularly when it comes to the subtle nuances
of plucked strings and other percussive sounds.
Fighting turbulence
Flexible port technology is used to reduce port resonance.
Each port is adjustable to allow users to modify the sound to
suit their room. The are and prole of each port is calculated by
computational uid dynamics to avoid turbulent air noise
that might colour the sound.
Hand-picked components
KEF’s engineers use advanced software to model the ideal
crossover. But every component is auditioned by the ultimate
measure: the human ear. Perfection takes time, but the results are
plain to hear. Reference crossovers are even decoupled from the
cabinet to minimise vibration and crosstalk.
Page 3
SPECIFICATIONS
Model
Design Three-way bass reex Three-way bass reex Three-way bass reex
Drive Units Uni-Q driver array:
Frequency range free eld (-6dB) Shor t port: 40Hz - 45kHz
Frequency range typical in room bass response (-6dB) 30Hz 28Hz 25Hz
Frequency Response (±3dB) 45Hz - 35kHz 43Hz - 35kHz 40Hz - 35kHz
Crossover frequency 350Hz, 2.8kHz 350Hz, 2.8kHz 350Hz, 2.8kHz
Amplier requirements 50 - 200 W 50 - 300 W 50 - 400 W
Sensitivity (2.83V/1m) 85dB 87.5dB 90dB
Harmonic distortion
2nd & 3rd harmonics (90dB, 1m)
Maximum output
(peak sound pressure level at 1m with pink noise)
Impedance 8Ω (min. 3.2Ω) 8Ω (min. 3.2Ω) 8Ω (min. 3.2Ω)
Weight 18.2 kg (40.1lbs) 51.3 kg (113.1lbs) 60.2 kg (132.7lbs)
Dimensions - with grille and terminal (H x W x D) 440 x 205 x 430 mm
Dimensions - with grille, terminal & plinth
(H x W x D)
Finish Copper Black Aluminium,
REFERENCE 1 REFERENCE 3 REFERENCE 5
HF: 25mm (1in.) vented aluminium dome
MF: 125mm (5in.) aluminium
Bass units:
LF: 1 x165mm (6.5in.) aluminium
Long port: 37Hz - 45kHz
<0.5% 40Hz - 100kHz
<0.2% 200Hz - 10kHz
111dB 113.5dB 116dB
(17.3 x 8.1 x 16.9 in.)
N/A 1202 x 349 x 470 mm
Blue Ice White, Silver Satin Walnut
Uni-Q driver array:
HF: 25mm (1in.) vented aluminium dome
MF: 125mm (5in.) aluminium
Bass units:
LF: 2 x165mm (6.5in.) aluminium
Short port: 38Hz - 45kHz
Long port: 35Hz - 45kHz
<0.5% 40Hz - 100kHz
<0.2% 200Hz - 10kHz
1155 x 205 x 470 mm
(45.5 x 8.1 x 18.5 in.)
(47.3 x 13. 7 x 18.5 in.)
Copper Black Aluminium,
Blue Ice White, Silver Satin Walnut
Uni-Q driver array:
HF: 25mm (1in.) vented aluminium dome
MF: 125mm (5in.) aluminium
Bass units:
LF: 4 x165mm (6.5in.) aluminium
Short port: 35Hz - 45kHz
Long port: 32Hz - 45kHz
<0.5% 40Hz - 100kHz
<0.2% 200Hz - 10kHz
1350 x 205 x 470 mm
(53.1 x 8.0 x 18.5 in.)
1397 x 349 x 470 mm
(55 x 13.7 x 18.5 in.)
Copper Black Aluminium,
Blue Ice White, Silver Satin Walnut
Model
Design Three-way closed box Three-way bass reex
Drive Units Uni-Q driver array:
Frequency range free eld
(-6dB)
Frequency range typical in
room bass response (-6dB)
Frequency Response (±3dB) 80Hz – 35kHz 48Hz - 35kHz
Crossover frequency 350Hz, 2.8kHz 350Hz, 2.8kHz
Amplier requirements 50 - 300W 50-400W
Sensitivity (2.83V/1m) 87.5dB 90dB
Harmonic distortion 2nd &
3rd harmonics (90dB, 1m)
Maximum output
(peak sound pressure level at
1m with pink noise)
Impedance 8Ω (min. 3.2Ω) 8Ω (min. 3.2Ω)
Weight 22.8kg (50.3 lbs.) 45.2 kg (99.6lbs)
Dimensions - with grille and
terminal (H x W x D)
Finishes Copper Black Aluminium,
REFERENCE 2c REFERENCE 4c
HF: 25mm (1in.) vented aluminium
dome
MF: 125mm (5in.) aluminium
Bass units:
LF: 2 x165mm (6.5in.) aluminium
65Hz - 45kHz Short port: 43Hz - 45kHz
46Hz 33Hz
<0.5% 40Hz – 100kHz
<0.2% 200Hz – 10kHz
113.5dB 116dB
205 x 630 x 325 mm
(8.1 x 24.8 x 12.8 in.)
Blue Ice White, Silver Satin Walnut
Uni-Q driver array:
HF: 25mm (1in.) vented aluminium
dome
MF: 125mm (5in.) aluminium
Bass units:
LF: 4 x165mm (6.5in.) aluminium
Long port: 40Hz - 45kHz
<0.5% 40Hz - 100kHz
<0.2% 200Hz - 10kHz
205 x 1090 x 470 mm
(8.1 x 42.9 x 18.5 in.)
Copper Black Aluminium,
Blue Ice White, Silver Satin Walnut
Model
Design Force cancelled closed box
LF Drive unit 2 x 225mm (9in.)
Frequency range at 90dB output
in free-space mode (-6dB)
Frequency response at 90dB
output in free-space mode (±3dB)
Amplier 2 x 500W Class D with switched mode
Maximum output (peak sound
pressure level at 1m 50Hz)
Low pass lter variable Variable frequency: 40Hz to 160Hz
Low level signal inputs RCA phono sockets
Link out RCA phono sockets
Speaker level input Ye s
Net internal volume 23L
Weight 34kg (75.0 lbs.)
Dimensions (H x W x D) 398 x 365 x 429 mm
Power requirements 100V - 120V / 220V - 240V ~50/60Hz
Power consumption 1000W
Finish Deep piano black
Visit: www.kef.com for more about KEF and its products.
KEF reserves the right, in line with continuing research and development, to amend or change specications. E&OE.
REFERENCE 8b
18Hz
24Hz
power supply and DSP based control
section
110dB
Variable slope: 12dB/oct, 18dB/oct,
24dB/oct
LFE mode: 350Hz, 18dB/oct
Analog XLR socket
01.2020 I The Reference
Loading...