KEF BLADE Floorstanding Speaker


The KEF BLADE is a state-of-the-art floorstanding speaker whose sleek and curvaceous cabinets are individually handmade in the UK for each and every customer. The BLADE features KEF's bespoke Uni Q Driver Array, which combines the high and mid-range frequency drivers into one, and four 9” low frequency drivers, two on each side. By mounting the bass drivers back-to-back, and combined with the speaker's acoustically inert cabinet, the BLADE's elegant performance is like standing mere feet from your favorite artist performing right in front of you.


The BLADE's cabinet draws inspiration from Brancusi’s seminal Modernist masterpiece "Bird in Space," resulting in a flowing form that boasts a quiet, assured confidence in itself and results in no acoustic diffractions. Standing just over five feet tall, BLADE will effortlessly fill any room with a lush, expansive soundstage, all while maintaining a beautifully striking presence in the color of your choice.


DesignThree-way bass reflex,
Single apparent source driver configuration
Uni-Q Driver ArrayMF: 5 in. Li-Mg-Al /LCP hybrid cone
HF: 1 in. Al dome
Bass Drivers4 x 9 in. 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 frequency350Hz, 2.3kHz
Amplifier requirements50 - 400W
Sensitivity (2.83V/1m)91dB
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
Impedance4Ω (min. 3.2Ω)
Weight126 lbs
Dimensions - with plinth (H x W x D)62.5 x 14.3 x 21.2 in.
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