BLADE is an attitude. It's about exploring the art of the possible, without preconceptions. Pushing boundaries.
BLADE is the result of KEF's best and brightest engineers being given free rein to create the ultimate loudspeaker without design or cost limitations. The BLADE concept took years to come to fruition but resulted in a loudspeaker that looks and sounds like no other, the next challenge was to turn it into a product that music lovers could own and enjoy.
BLADE was so successful and received so many prestigious awards that we developed a second version: BLADE TWO. This has the same iconic design and technology in a scaled down cabinet that can be accommodated in smaller rooms. It has the same DNA, same unique single apparent source configuraiton and most importanlty, the same phenomenally realistic sound.
BLADE and BLADE TWO share a new architecture that achieves the ideal point source. The four bass drivers (225mm/9-in. for BLADE, 165mm/6.5-in. for BLADE TWO) are arranged so that their combined acoustic centre occupies exactly the same point in space as that of the Uni-Q HF/MF array. This means that the sound escapes the cabinet as if it weren't there and creates truly holographic imaging.
Just as KEF's philosophy has always been to innovate in pursuit of the most accurate and realistic sound, BLADE loudspeakers create a spectacularly warm and expansive sound that draws you in to the music. Totally natural and effortlessly accurate, they are as emotionally inspiring as a live performance.
Sound from a single source is inherently clear. BLADE's treble and midrange drivers share the same axis and the four bass drivers are mounted such that their acoustic centres are in exactly the same spot.
This single apparent source configuration is what makes BLADE and BLADE TWO so incredibly coherent.
BLADE's bass drivers are mounted in discrete chambers. This increases the frequency of internal standing waves to way beyond the crossover point and reduces the need for damping materials (which can impair bass quality). Nothing has been overlooked in the quest for ultimate clarity.
To avoid dissipating the energy of such potent bass drivers by exciting the cabinet, the large kinetic forces involved are cancelled out by mounting the drivers rigidly back-to-back.
This highly effective configuration partly accounts for the BLADE and BLADE TWO's astonishing low level resolution.
Two pairs of the finest audiophile WBT terminals for bi-wiring or bi-amping optimise the retrieval of low level detail from the signal in the speaker cable. Patented screw-in linking plugs offer a high spec and simplified alternative to wiring links.
|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||28Hz - 45kHz (-6dB) free field
20Hz (-6dB) typical in room bass response
|Frequency Response||40Hz - 35kHz ±3dB (-6dB at 28Hz)|
|Crossover Frequencies||350Hz, 2.3kHz|
|Maximum Output||117dB (peak sound pressure level at 1m with pink noise)|
|Amplifier requirements||50 - 400 W|
|Harmonic distortion||2nd & 3rd harmonics (90dB, 1m)
<0.5% 40Hz - 100kHz
<0.2% 200Hz - 10kHz
|Impedance||4 Ohms (min.3.2 Ohms)|
|Dimensions||1590 x 363 x 540 mm / 62.5 x 14.3 x 21.2 in. (with plinth H x W x D)|
|Weight||57.2 kg (126 lbs)|
BLADE & BLADE TWO Brochure
BLADE & BLADE TWO Information Sheet
|Remarks||* KEF reserves the right, in line with continuing research and development, to amend or change specifications. E&OE.|