Reference 1 pairs KEF’s latest 5in. MF/HF Uni-Q driver array with the sensational 6.5in. alloy cone bass driver to create a compellingly realistic sound stage out of all proportion to its size.
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 <0.5% 40Hz – 100kHz
2nd & 3rd harmonics (90dB, 1m) <0.2% 200Hz – 10kHz
Maximum output 111 dB
(peak sound pressure level at 1m with pink noise)
Impedance 😯 (min. 3.2O)
Weight 18.2kg (40.1lbs.)
Dimensions (H x W x D) 440 x 205 x 430 mm
(with grille and terminal) (17.3 x 8.1 x 16.9 in.)
Finishes Deep Piano Black, Satin American Walnut, Luxury Gloss Rosewood