| Frequency Response | 13 Hz - 35 kHz, 15 Hz - 28 kHz | Crossover Frequency : 450 Hz, 2.2 KHz
Frequency Range ( -6dB ) : 30 Hz - 45 KHz
Frequency Response ( ±3dB ) : 33 Hz - 35 KHz
Typical In-Room Bass Response ( -6dB ) : 25 Hz
Harmonic Distortion 2nd & 3rd Harmonics ( 90dB, 1m ) : <0.5% 40Hz - 100KHz, <0.2% 200Hz - 2KHz, <0.1% 2kHz - 20KHz |
| Available Colors | Black, White, Grey, Brown | Black, White, Blue, Red, Grey |
| Other Features | 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… | High Sensitivity : Boasting a sensitivity of 86dB , 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 450Hz and 2.2kHz 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 165 mm force-canceling aluminum cone bass units, providing a comprehensive frequency range from 30Hz - 55kHz.
Impressive SPL Levels : The speakers can achieve a maximum output of 116dB, 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 3.2 ohms ) ensures compatibility with a variety of audio systems. |
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