Boxe KEF Blade One Light Metallic Silver

KEFVariantă: Light Metallic Silver Cod: SP3753CC15
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Caracteristici principale

  • Boxa de podea
  • Difuzoare : 1 tweeter 2.5 cm + 1 x mid-woofer 12.5cm + 4 x woofer 22.5cm
  • Raspuns in frecventa : 40Hz - 35kHz (±3dB)
  • Sensibilitate : 91dB ( 2.83V @ 1 m )
  • Impedanta nominala: 4 ohm
  • Amplificare recomandata: 50 - 400 W
Specificații tehnice

Greutate produs

57.2 kg

Dimensiuni produs

(H x W x D) 1590 x 363 x 540 mm

Alte specificații

Design pe 3 cai, bas-reflex

Crossover frequencies: 350Hz, 2.3kHz

Harmonic distortion: 2nd & 3rd harmonics (90dB, 1m)
<0.5% 40Hz - 100kHz
<0.2% 200Hz - 10kHz

Garanție (luni)



BLADE is an attitude. It's about exploring the art of the possible, without preconceptions. Pushing boundaries.

Exploring the Art of the Possible

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.

Cutting edge sound

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.

Uncompromised Innovation

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.

Single apparent source

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.

Discrete bass chambers

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.

Force cancelling

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.

Terminals & terminal links

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.

Low order crossovers

The simple low order crossovers specified for both BLADE and BLADE TWO employ the best components available. These are carefully selected by a rigorous auditioning process so that every part of the signal path is fine-tuned for maximum clarity.

Hard wiring

All the crossover components are individually wired by hand rather than mounted on a conventional printed circuit board. As well as being more environmentally friendly, this optimises both reliability and sound quality by assuring the cleanest possible signal transmission.

Technical Specifications


Three-way bass reflex
Single apparent source

Drive units

​​Uni-Q driver array:
HF: 25 mm (1 in.) aluminium dome with MAT
MF: 125 mm (5 in.) aluminium cone
Bass units:
LF: 4 x 225 mm (9 in.) aluminium cone, force cancelling

Frequency range free field (-6dB): 27Hz - 45kHz

Frequency range typical in room bass response (-6dB): 20Hz

Crossover frequency: 350Hz, 2kHz

Frequency response (±3dB): 35Hz - 35kHz

Amplifier requirements: 50-400W

Sensitivity (2.83V/1m): 88dB

Harmonic distortion 2nd and 3rd harmonics (90dB, 1m):

<0.5% 40Hz - 100kHz
<0.2% 200Hz - 2kHz
<0.1% 2kHz - 20kHz

Maximum output (SPL) (peak sound pressure level at 1m with pink noise): 117dB

Impedance: 4 Ω (min. 2.8 Ω)

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.)

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