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.
SPECIFICATIONS
Three-way bass reflex, single apparent source driver configuration
DIMENSIONS
1590 x 363 x 540 mm / 62.5 x 14.3 x 21.2 in.
(with plinth H x W x D)
(with plinth H x W x D)
WEIGHT
57.2 kg (126 lbs)
DRIVE UNITS
Uni-Q driver array:
MF: 125mm (5in.)
Li-Mg-Al /LCP hybrid cone
HF: 25mm (1in.)
HF: 25mm (1in.)
Al dome Bass units:
LF: 4 x 225mm (9in.) with force cancelling
LF: 4 x 225mm (9in.) with force cancelling
FREQUENCY RANGE
28Hz – 45kHz (-6dB) free field
20Hz (-6dB) typical in room bass response
20Hz (-6dB) typical in room bass response
FREQUENCY RESPONSE
40Hz – 35kHz ±3dB (-6dB at 28Hz)
CROSSOVER FREQUENCIES
350Hz, 2.3kHz
AMPLIFIER REQUIREMENTS
50 – 400 W
SENSITIVITY
91dB (2.83V/1m)
HARMONIC DISTORTION
2nd & 3rd harmonics (90dB, 1m)
<0.5% 40Hz – 100kHz
<0.2% 200Hz – 10kHzIMPEDANCE
<0.5% 40Hz – 100kHz
<0.2% 200Hz – 10kHzIMPEDANCE
4 Ohms (min.3.2 Ohms)
MAXIMUM OUTPUT
117dB (peak sound pressure level at 1m with pink noise)