• Sale
  • Regular price $32,000.00

Exploring the Art of the Possible

BLADE is the top model in the range with four 225mm/9in. bass drivers and a Uni-Q MF/HF array in a 1590mm/62.5in. high cabinet.

BLADE is the world's first Single Apparent Source loudspeaker and the production version of the cost no object Concept Blade project KEF revealed at the Munich High End Show in 2009.


Design Three-way bass reflex,
Single apparent source driver configuration
Drive Units Uni-Q driver array:
MF: 125mm (5in.) Li-Mg-Al /LCP hybrid cone
HF: 25mm (1in.) Al dome
Bass units:
LF: 4 x 225mm (9in.) with force cancelling
Frequency range free field (-6dB) 28Hz - 45kHz
Frequency range typical in room bass response (-6dB) 20Hz
Frequency Response (±3dB) 40Hz - 35kHz ±3dB
(-6dB at 28Hz)
Crossover frequency 350Hz, 2.3kHz
Amplifier requirements 50 - 400W
Sensitivity (2.83V/1m) 91dB
Harmonic distortion 2nd & 3rd harmonics (90dB, 1m) <0.5% 40Hz – 100kHz
<0.2% 200Hz – 10kHz
Maximum output (peak sound pressure level at 1m with pink noise) 117dB
Impedance 4Ω (min. 3.2Ω)
Weight 57.2 kg (126 lbs)
Dimensions - with plinth (H x W x D) 1590 x 363 x 540 mm
62.5 x 14.3 x 21.2 in.

** KEF reserves the right, in line with continuing research and development, to amend or change specifications. E&OE. **