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
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|
|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.