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.)
 | 
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