The KEF R600c is the larger of the two centre channel speakers, yet the design ensures the slimmest possible profile for ease of placement in racks and under screens. What’s more, because of the D’Appolito driver configuration, the R600c can also be used in LCR positions. The R600c will immerse you in true surround sound, helping place you at the very heart of the action with a level of clarity, precision and sophistication that will make any music or movie sound as though you’re at the concert or amidst the action. Model R600c Design Three-way bass reflex Drive Units Uni-Q driver array:HF: 25mm (1in.) vented aluminium domeMF: 125mm (5in.) aluminiumBass units: LF: 2 x 165mm (6.5in.) aluminium Frequency range (-6dB) 50Hz - 45kHz Frequency response (±3dB) 60Hz - 28kHz Crossover frequency 500Hz, 2.9kHz Amplifier requirements 25 - 200 W Sensitivity (2.83V/1m) 89dB Harmonic distortion2nd & 3rd harmonics (90dB, 1m)