Featuring the all-new Uni-Q driver array and a 6.5-inch LF bass driver, the three-way KEF R300 lacks for nothing. Its stylishly uncluttered appearance beautifully complements the fast and clean mid-range response, along with accurate and clean low-end frequencies. With dynamic, uncompressed and undistorted LF performance, the R Series R300 provides a clarity and realism many strive to emulate but few achieve.
 
 
| Model | R300 | 
| Design | Three-way bass reflex | 
| Drive units | Uni-Q driver array: HF: 25mm (1in.) vented aluminium dome
 MF: 125mm (5in.) aluminium
 Bass units: LF: 165mm (6.5in.) aluminium
 | 
| Frequency range (-6dB) | 42Hz - 45kHz | 
| Frequency response (±3dB) | 50Hz - 28kHz | 
| Crossover frequency | 500Hz, 2.8kHz | 
| Amplifier requirements | 25 - 120 W | 
| Sensitivity (2.83V/1m) | 88dB | 
| Harmonic distortion 2nd & 3rd harmonics (90dB, 1m)
 | <0.4% 130Hz-20kHz | 
| Maximum output | 110dB | 
| Nominal impedance | 8Ω (min. 3.2Ω) | 
| Weight | 12kg (26.4lbs.) | 
| Dimension (H x W x D) (with grille and terminal)
 | 385 x 210 x 345 mm (15.2 x 8.3 x 13.6 in.)
 |