KEF Blade One Meta Speakers

Engineered and handcrafted in UK

Since 1961, KEF have been creating remarkable award-winning loudspeakers at thier UK home in Maidstone, Kent. Blade is still being designed, engineered, and handcrafted in Maidstone. The Blade, world's first Single Apparent Source speaker, now with 12th generation Uni-Qwith MAT. A bespoke driver array engineered to deliver pristine performance, and capable of raising Blade to new heights of performance. Featuring four 225mm (9 in.) force-cancelling bass drivers, Blade One Meta is the top model in the Blade series

A sound statement. An icon that engages every
sense.

A bold and striking presence, Blade pushes the boundaries of what is possible with sound. The worlds first Single Apparent Source loudspeaker now with KEFs innovative Metamaterial Absorption Technology

The worlds first Single Apparent Source speaker

At the heart of Blade lies Single Apparent Source technology; a unique technology that makes the Blade incredibly coherent, with noticeably more precise imaging. The latest version of Blade benefits from our latest acoustic innovation of the 12th generation Uni-Qwith Metamaterial Absorption Technology (MAT).

Sit anywhere, hear every detail

Refined through iterations, the Uni-Qdriver array for the latest Blade is the 12th generation Uni-Qwith MAT. Uni-Qacts as a single point source to disperse sound more evenly throughout the room. The result is the elimination of the limited sweet spot, therefore allowing everybody sitting at different spots in the room to experience and enjoy the same natural, detailed sound.

Power in control

Blades four powerful low frequency drivers are mounted back-to-back to cancel out kinetic forces that might otherwise colour their output. The result is cleaner, purer sound, and astonishing low-level resonance.

Cutting edge sound

Blades four powerful vented bass drivers are perfectly integrated with the 12th generation Uni-Qwith MAT to deliver clean, immaculately controlled bass. The crossover design in the latest Blade has been enhanced to fine-tune the signal path for maximum clarity.

Discrete chambers for pure sound

On Blade, each pair of low frequency drivers is located in its own chamber. This approach reduces the potential for interference between the drive units, while also reducing the need for damping, which can impair bass quality.

Specifications

DesignThree-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 cancellingFrequency range free field (-6dB)

27Hz - 45kHz

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

20Hz

Frequency response (3dB)

35Hz - 35kHz

Crossover frequency

350Hz, 2kHz

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 - 20kHzMaximum output (SPL)
(peak sound pressure level at 1m
with pink noise)

117dB

Impedance

4 (min. 2.8 )

Weight57.2 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.)

Standard finishesPiano Black/Copper, Piano Black/Grey, Frosted Blue/Blue, Frosted Blue/Bronze, Charcoal Grey/Red, Charcoal Grey/Bronze, Racing Red/Grey, Arctic White/Champagne