Reference 5 Magnificent is the only word. KEF’s passion for perfection embodied in a tall three-way floorstander that aligns four powerful, extremely linear 165mm (6.5 inch) bass drivers – two above and two below KEF’s latest 125mm (5 inch) MF/HF Uni-Q array, with the sensational new 25mm (1 inch) vented aluminium dome tweeter at the acoustic centre. Lows are reproduced with consummate agility and control, fluidly integrating with the Uni-Q output to create an all-enveloping soundfield of spine-tingling accuracy and depth. For music or film, it reveals subtleties you’d never noticed while gripping your emotions with the full power of the performance.
Specifications
Model |
REFERENCE 5 |
Design |
Three-way Bass Reflex |
Drive Units |
Uni-Q driver array:
HF: 25mm (1in.) vented aluminium dome
MF: 125mm (5in.) aluminium
Bass units:
LF: 4 x165mm (6.5in.) aluminium |
Frequency range free field (-6dB) |
Short port: 35Hz - 45kHz
Long port: 32Hz - 45kHz |
Frequency range typical in room bass response (-6dB) |
25Hz |
Frequency response (±3dB) |
40Hz – 35kHz |
Crossover frequency |
350Hz, 2.8kHz |
Amplifier requirements |
50-400W |
Sensitivity (2.83V/ 1m) |
90dB |
Harmonic distortion
2nd & 3rd harmonics (90dB, 1m) |
<0.5% 40Hz – 100kHz
<0.2% 200Hz – 10kHz |
Maximum output
(peak sound pressure level at 1m with pink noise) |
116 dB |
Impedance |
8Ω (min. 3.2Ω) |
Weight |
60.2kg (132.7 lbs.) |
Dimensions (H x W x D)
(with grille and terminal) |
1350 x 205 x 470 mm
(53.1 x 8.0 x 18.5 in.) |
Dimension (H x W x D)
(with grille, terminal & plinth) |
1397 x 349 x 470 mm
(55 x 13.7 x 18.5 in.) |
Finishes |
Deep Piano Black, Satin American Walnut, Luxury Gloss Rosewood, Blue Ice White, Copper Black Aluminium |
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Reference 3 Same DNA, more modest dimensions – and the same uncanny ability to generate an intricate, totally natural-sounding 3D soundstage. The two 165mm (6.5 inch) bass drivers are positioned perfectly above and below KEF’s latest 125mm (5 inch) MF/HF Uni-Q driver array in a D'Appolito configuration. Fidelity across the midrange and treble is outstanding, and the transitions imperceptible. And with Uni-Q’s broad inclusive dispersion, everyone in the room can enjoy the same rich, spatially precise acoustic imagery without being restricted to a narrow sweet spot. As well as putting you right at the heart of the original performance, it gives you the soul.
Specifications
Model |
REFERENCE 3 |
Design |
Three-way Bass Reflex |
Drive units |
Uni-Q driver array:
HF: 25mm (1in.) vented aluminium dome
MF: 125mm (5in.) aluminium
Bass units:
LF: 2 x165mm (6.5in.) aluminium |
Frequency range free field (-6dB) |
Short port: 38Hz - 45kHz
Long port: 35Hz - 45kHz |
Frequency range typical in room bass response (-6dB) |
28Hz |
Frequency response (±3dB) |
43Hz – 35kHz |
Crossover frequency |
350Hz, 2.8kHz |
Amplifier requirements |
50-300W |
Sensitivity (2.83V/ 1m) |
87.5dB |
Harmonic distortion
2nd & 3rd harmonics (90dB, 1m) |
<0.5% 40Hz – 100kHz
<0.2% 200Hz – 10kHz |
Maximum output
(peak sound pressure level at 1m with pink noise) |
113.5 dB |
Impedance |
8Ω (min. 3.2Ω) |
Weight |
51.3kg (113.1 lbs.) |
Dimensions (H x W x D)
(with grille and terminal) |
1155 x 205 x 470 mm
(45.5 x 8.1 x 18.5 in.) |
Dimension (H x W x D)
(with grille, terminal & plinth) |
1202 x 349 x 470 mm
(47.3 x 13.7 x 18.5 in.) |
Finishes |
Deep Piano Black, Satin American Walnut, Luxury Gloss Rosewood, Blue Ice White, Copper Black Aluminium |
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Reference 1 All the jaw-dropping performance and innovative engineering pioneered for the critically acclaimed LS50 studio monitor, and then some. Reference 1 pairs KEF’s latest 125mm (5 inch) MF/HF Uni-Q driver array with the sensational new 165mm (6.5 inch) alloy cone bass driver to create a compellingly realistic sound stage out of all proportion to its size. Mounted on shelves or stands, Uni-Q’s inherently wide, even dispersion also makes it the perfect rear channel speaker in a home theatre system that effortlessly reveals all the subtleties encoded in modern soundtracks.
Specifications
Model |
REFERENCE 1 |
Design |
Three-way Bass Reflex |
Drive Units |
Uni-Q driver array:
HF: 25mm (1in.) vented aluminium dome
MF: 125mm (5in.) aluminium
Bass units:
LF: 1 x165mm (6.5in.) aluminium |
Frequency range free field (-6dB) |
Short port: 40Hz - 45kHz
Long port: 37Hz - 45kHz |
Frequency range typical in room bass response (-6dB) |
30Hz |
Frequency response (±3dB) |
45Hz – 35kHz |
Crossover frequency |
350Hz, 2.8kHz |
Amplifier requirements |
50-200W |
Sensitivity (2.83V/ 1m) |
85dB |
Harmonic distortion
2nd & 3rd harmonics (90dB, 1m) |
<0.5% 40Hz – 100kHz
<0.2% 200Hz – 10kHz |
Maximum output
(peak sound pressure level at 1m with pink noise) |
111 dB |
Impedance |
8Ω (min. 3.2Ω) |
Weight |
18.2kg (40.1lbs.) |
Dimensions (H x W x D)
(with grille and terminal) |
440 x 205 x 430 mm
(17.3 x 8.1 x 16.9 in.) |
Finishes |
Deep Piano Black, Satin American Walnut, Luxury Gloss Rosewood |
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Reference 4c As the main source of dialogue and vocals, the centre channel is critical to your enjoyment of what’s on screen. With KEF’s superlative new 125mm (5”) MF/HF Uni-Q driver array between four 165mm (6.5 inch) bass drivers, the Reference 4c reproduces every last detail exactly as the director or the artist intended - spatially precise, stunningly clear and with a dynamic range that takes rapid transitions in its stride. For movie buffs looking for total immersion, it’s the perfect centre.
Specifications
Model |
REFERENCE 4c |
Design |
Three-way bass reflex |
Drive Units |
Uni-Q driver array:
HF: 25mm (1in.) vented aluminium dome
MF: 125mm (5in.) aluminium
Bass units:
LF: 4 x165mm (6.5in.) aluminium |
Frequency range free field (-6dB) |
Short port: 43Hz - 45kHz
Long port: 40Hz - 45kHz |
Frequency range typical in room bass response (-6dB) |
33Hz |
Frequency response (±3dB) |
48Hz – 35kHz |
Crossover frequency |
350Hz, 2.8kHz |
Amplifier Requirements |
50-400 W |
Sensitivity (2.83V/ 1m) |
90dB |
Harmonic distortion 2nd & 3rd harmonics (90dB, 1m) |
<0.5% 40Hz – 100kHz
<0.2% 200Hz – 10kHz |
Maximum output (peak sound pressure level at 1m with pink noise) |
116dB |
Impedance |
8Ω (min. 3.2Ω) |
Weight |
45.2kg (99.6lbs.) |
Dimensions - with grille, terminal & plinth (H x W x D) |
205 x 1090 x 470 mm
(8.1 x 42.9 x 18.5 in.) |
Finish |
Deep Piano Black, Satin American Walnut, Luxury Gloss Rosewood |
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Reference Subwoofer To experience the full impact of dramatic on-screen effects, bass definition and control are as important as extension. For power with accuracy, the Reference sub boasts two 500W Class D amps, each driving a 228mm (9 inch) long-throw, ultra-low distortion driver, connected back-to-back in the heavily braced, acoustically inert cabinet. Only a truly great subwoofer could do justice to Reference standards of home theatre, and it does.
Specifications
Model |
REFERENCE SUBWOOFER |
Design |
Force cancelled closed box |
LF Drive unit |
2 x 225mm (9in.) |
Frequency range at 90dB output in free-space mode (-6dB) |
18Hz |
Frequency response at 90dB output in free-space mode (±3dB) |
24Hz |
Amplifier |
2 x 500W Class D with switched mode power supply and DSP based control section |
Maximum output
(peak sound pressure level at 1m 50Hz) |
110dB |
Low pass filter variable |
Variable frequency: 40Hz to 160Hz
Variable slope: 12dB/oct, 18dB/oct, 24dB/oct
LFE mode: 350Hz, 18dB/oct |
Low level signal inputs |
RCA phono sockets
Analog XLR socket |
Link out |
RCA phono sockets |
Speaker level input |
Yes |
Net internal volume |
23L |
Weight |
35kg (77.2 lb) |
Dimensions (H x W x D) |
398 x 365 x 429 mm |
Power requirements |
100V - 120V / 220V - 240V ~50/60Hz |
Power consumption |
1000W |
Finishes |
Deep Piano Black |
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