KEF

Bowers & Wilkins

Blade One Meta

801 D4

Home Theatre Speaker Specification

Home Theatre Speaker Specification

Dynamic

Dynamic

Uni-Q Driver Array
MF : 125 mm Aluminum Cone
HF : 25 mm Aluminum Dome With MAT
Bass Unit LF : 4 X 225 mm Hybrid Aluminum Cone, Force Cancelling

25/650 mm

4 Ohms ( Min. 2.8 Ohms )

8 ohm

88 dB

90dB spl

Crossover Frequency : 350 Hz, 2 KHz
Frequency Range ( -6dB ) : 27 Hz - 45 KHz
Frequency Response ( ±3dB ) : 35 Hz - 35 KHz
Typical In-Room Bass Response ( -6dB ) : 20 Hz
Harmonic Distortion 2nd & 3rd Harmonics ( 90dB, 1m ) : <0.5% 40Hz - 100KHz, <0.2% 200Hz - 2KHz, <0.1% 2kHz - 20KHz

13 Hz - 35 kHz, 15 Hz - 28 kHz

NA

AC 100V-240 V / 50 Hz / 60 Hz

50 - 400 W ( RMS )
Three-Way Bass Reflex
Single Apparent Source

50 W - 1000 W ( RMS )

117 dB

90 dB

NA

No

No

57.2 Kg

100.60 Kg

Speaker : 1590 mm X 363 mm X 540 mm

1221 mm X 600 mm X 451 mm

Black, White, Blue, Red, Grey

Black, White, Grey, Brown

KEF Blade One Meta Home Theatre Speaker
User Manual
Warranty Information

Bowers & Wilkins 801 D4 Speaker

High Sensitivity : Boasting a sensitivity of 88dB , these speakers efficiently convert electrical signals into sound, ensuring a dynamic and impactful listening experience.
Low Harmonic Distortion : Harmonic distortion is kept to a minimum, with values below 0.5% across various frequency ranges, ensuring faithful reproduction of audio without unwanted artifacts.
Amplifier Compatibility : With amplifier requirements ranging from 50-400W, these speakers can be efficiently driven by a variety of amplifiers, allowing for flexibility in system configuration.
Crossover Precision : The crossover frequencies at 350Hz and 2kHz contribute to seamless transitions between different driver units, maintaining accuracy in reproducing audio across the frequency spectrum.
Single Apparent Source : With a single apparent source configuration, these speakers create a cohesive and immersive soundstage, ensuring that audio emanates seamlessly from a unified point, enhancing spatial realism.
Metamaterial Absorption Technology : The high-frequency unit boasts a 25 mm aluminum dome with MAT, a cutting-edge technology that minimizes distortion and enhances clarity in the reproduction of high-frequency sounds.
Three-Way Bass Reflex Design : The KEF Blade Two Meta Floorstanding Speakers feature a sophisticated three-way bass reflex design, optimizing the reproduction of low, mid, and high frequencies for a well-balanced audio experience.
Diverse Drive Units : The speakers incorporate a variety of drive units, including a 125 mm aluminum cone mid-frequency unit and four 225 mm force-canceling aluminum cone bass units, providing a comprehensive frequency range from 35Hz - 35kHz.
Impressive SPL Levels : The speakers can achieve a maximum output of 117dB, indicating their capability to deliver high sound pressure levels, making them suitable for large rooms or home theater setups. The impedance rating of 4 ohms ( minimum 2.8 ohms ) ensures compatibility with a variety of audio systems.

3-Way Vented-Box System.
5-Year warranty Valid from the date of purchase for passive loudspeakers.
Technical features - Diamond Tweeter, Solid Body Tweeter-On-Top, Continuumâ„¢ Cone FST, Matrixâ„¢, Anti-Resonance Plug, Biomimetic Suspension, Turbineâ„¢ Head, Aerofoilâ„¢ Cone Bass Units, Flowport.
The loudspeaker that sets the standard other high-end designs will be judged by for years to come. Endowed with every new technology the 800 Series Diamond has to offer, the reference-quality 801 D4 is an instant icon.
801 D4 is our flagship and the most powerful model in the new 800 Series Diamond range. Its no-compromise design includes all our most advanced technologies in their purest, most optimized form alongside crossover components of the highest quality. You want our reference loudspeaker? This is it…