With twin 8-inch LF drivers positioned perfectly either side of the remarkably sweet and accurate latest generation Uni-Q driver array, the KEF R900 ensures an incredible scale and depth. Upper registers are articulated with flawless precision, whilst the bass drivers maintain authoritative control over the LF – providing undistorted, earth moving realism and accuracy that will awaken your very soul.

Model R900
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 x 200mm (8in.) aluminium
Frequency range (-6dB) 35Hz - 45kHz
Frequency response (±3dB) 40Hz - 28kHz
Crossover frequency 400Hz, 2.9kHz
Amplifier requirements 25 - 250 W
Sensitivity (2.83V/1m) 90dB
Harmonic distortion
2nd & 3rd harmonics (90dB, 1m) <0.4% 80Hz-20kHz
Maximum output 115dB
Nominal impedance 8Ω (min. 3.7Ω)
Weight 29.5kg (65lbs.)
Dimension (H x W x D)
(with grille and terminal) 1130 x 240 x 365 mm
(44.5 x 9.4 x 14.4 in.)
Dimension (H x W x D)
(with grille, terminal & plinth) 1181 x 359 x 388 mm (46.5 x 14.1 x 15.3 in.)