KEF Reference 4 Meta Centre Channel Loudspeaker
£6499
ON DEMONSTRATION
The benchmark of benchmarks
Since 1973, The Reference has continually set the benchmark for loudspeakers and sound reproduction. Pioneering the use of digital technologies to achieve the highest audio accuracy, every pair can be matched within 0.5dB to the laboratory-maintained reference standard.
Design
Three-way bass reflex
Drive units
Uni-Q driver array:
HF: 25 mm (1 in.) aluminium dome with MAT
MF: 125 mm (5 in.) aluminium cone
Bass units:
LF: 4 x 165 mm (6.5 in.) aluminium cone
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
450Hz, 2.1kHz
Amplifier requirements
50-400W
Sensitivity (2.83V/1m)
88dB
Harmonic distortion 2nd & 3rd harmonics (90dB, 1m)
<0.5% 40Hz – 100kHz
<0.2% 200Hz – 2kHz
<0.1% 2kHz - 20kHz
Maximum output (peak sound pressure level at 1m with pink noise)
116dB
Impedance
4 Ω (min. 3.2 Ω)
Weight
45.2 kg (99.6 lbs.)
Dimensions (H x W x D)(with grille and terminal)
205 x 1090 x 463 mm(8.1 x 42.9 x 18.2 in.)