Description
KEF Blade One Meta: Floorstanding Speakers for Immersive Music Reproduction
The KEF Blade One Meta is a passive floorstanding speaker for larger rooms and stereo systems, with a focus on spatial imaging and far-reaching bass. The flagship model of the Blade series combines these qualities with uniform sound dispersion for different listening positions.
Key Features at a Glance
- Single Apparent Source: Bass, midrange, and treble sound as if they originate from a single sound source.
- Uni-Q with MAT: Uniform dispersion and reduced coloration from rear tweeter sound.
- Force Cancelling: Four opposing woofers cancel out mechanical reaction forces.
- Distinctive Design: Sleek, curved cabinet with side-mounted woofers.
Bass, Midrange, and Treble from a Single Apparent Source
To create a cohesive image of voices and instruments, the Uni-Q combines the tweeter and midrange driver in a single acoustic center. The symmetrically arranged woofers extend this principle to the bass: Single Apparent Source tunes all ranges so that the sound appears to originate from a single point.
Uniform Sound Dispersion for Multiple Listening Positions
The twelfth-generation Uni-Q disperses sound widely and uniformly, supporting group listening even outside the central listening position. The labyrinthine MAT structure behind the tweeter absorbs 99 percent of its rear sound energy, thereby reducing coloration. It does not replace acoustic room treatment.
Four Woofers Cancel Mechanical Forces
The opposing woofers cancel out their reaction forces through Force Cancelling, supporting controlled bass. Each pair operates in its own acoustic chamber to limit mutual interference.
Terminals for Single-Wiring, Bi-Wiring, and Bi-Amping
The terminals accept bare cable ends, cable boots, or banana plugs, enabling single-wiring, bi-wiring, and bi-amping. In stereo operation, each speaker is connected to the left or right amplifier channel, respectively.
An amplifier and speaker cables are required separately. When choosing an amplifier, the recommended power rating is important, as is suitability for the low minimum impedance.
Maintain Distance from Side Walls and Room Corners
The speakers require a stable, level placement. Immediate proximity to side walls and room corners should be avoided, as this can overemphasize the bass and impair the spatial image.
Adjustable spikes and the rear spirit level help with leveling; included floor protectors shield wooden floors. Due to their size and weight, two suitable people are required for transport and setup.
Sleek Cabinet with Side-Mounted Woofers
The side-mounted driver arrangement enables the cabinet shape, which tapers toward the bottom and back. Inspired by Brancusi's "Bird in Space," it was created together with Eric Chan of ECCO Design and makes a distinctive statement in the living or listening room.
Developed and Handcrafted in Maidstone
KEF develops, designs, and handcrafts the Blade series at its historic brand home in Maidstone, Kent, Great Britain.
Blade One Meta and Blade Two Meta Compared
Compared to the Blade Two Meta, the Blade One Meta offers larger woofers, higher sensitivity, and a lower free-field roll-off frequency. The Blade Two Meta requires less space, weighs less, and is priced below the Blade One Meta; it also has a higher minimum impedance. Within the narrower frequency response tolerance, it nominally reaches slightly lower, which is why the two measurements should be considered separately.
| Feature | Blade One Meta | Blade Two Meta |
|---|---|---|
| Woofers | 4 × 22.5 cm | 4 × 16.5 cm |
| Free-Field Frequency Range (−6 dB) | 27 Hz–45 kHz | 30 Hz–45 kHz |
| Frequency Response (±3 dB) | 35 Hz–35 kHz | 33 Hz–35 kHz |
| Sensitivity (2.83 V / 1 m) | 88 dB | 86 dB |
| Minimum Impedance | 2.8 Ω | 3.2 Ω |
| Dimensions with Base (H × W × D) | 159 × 36.3 × 54 cm | 146.1 × 33.8 × 47.5 cm |
| Weight per Speaker | 57.2 kg | 35.3 kg |
Suitability and Important Notes
Who is the Blade One Meta for?
- Music lovers with a high-quality stereo system and sufficient floor space.
- Listeners who want to enjoy music together from different listening positions.
Important Notes
- Room acoustics and placement affect the sound.
Conclusion
The Blade One Meta is suitable for stereo systems with sufficient space and for those who want cohesive, immersive music reproduction, even when listening together.
Warranty
Technical Data
| Product Type | Stereo Loudspeaker |
| Installation Type | Stereo Loudspeaker |
| Width | 36.3 |
| Height | 159 |
| Depth | 54 |
| Weight | 57.2 |
| Width (cm) | 36.3 |
| Height (cm) | 159 |
| Depth (cm) | 54 |
| Weight (kg) | 57.2 |
| Speaker Type | Floor-standing speaker |
| Speaker System | 3-way speaker system |
| Enclosure (sealed/bass reflex) | Bass reflex system |
| Efficiency/Sound pressure 2.83V/1m (dB) | 88 |
| Impedance (ohms) | 4 |
| Min. recommended amplifier power (W) | 50 |
| Max. recommended amplifier power (W) | 400 |
| Frequency response lower limit (Hz) | 35 |
| Frequency response upper limit (Hz) | 35000 |
| Number of tweeters | 1 |
| Tweeter diameter (cm) | 2.5 |
| Design | Stereo Loudspeaker |
| Frequency response lower limit | 35 |
| Frequency response upper limit | 35000 |
| Bass reflex system | yes |
| Efficiency/Sound pressure (dB) | 117 |
| Crossover frequency mid-high range (Hz) | 2000 |
| Number of mid-range drivers | 1 |
| Mid-range driver diameter (cm) | 12.5 |
| Number of woofers | 4 |
| Woofer diameter (cm) | 22.5 |
| Crossover frequency low-mid range (Hz) | 350 |
| Number of speaker cabinets | 2 |
| Form factor | Floor-standing speaker |
| Number of speaker cabinets | 2 |
Manufacturer information
More articles from this series
Blade One Meta
Passive floorstanding speaker with Single Apparent Source technology for a coherent spatial image across the entire frequency range.
Description
KEF Blade One Meta: Floorstanding Speakers for Immersive Music Reproduction
The KEF Blade One Meta is a passive floorstanding speaker for larger rooms and stereo systems, with a focus on spatial imaging and far-reaching bass. The flagship model of the Blade series combines these qualities with uniform sound dispersion for different listening positions.
Key Features at a Glance
- Single Apparent Source: Bass, midrange, and treble sound as if they originate from a single sound source.
- Uni-Q with MAT: Uniform dispersion and reduced coloration from rear tweeter sound.
- Force Cancelling: Four opposing woofers cancel out mechanical reaction forces.
- Distinctive Design: Sleek, curved cabinet with side-mounted woofers.
Bass, Midrange, and Treble from a Single Apparent Source
To create a cohesive image of voices and instruments, the Uni-Q combines the tweeter and midrange driver in a single acoustic center. The symmetrically arranged woofers extend this principle to the bass: Single Apparent Source tunes all ranges so that the sound appears to originate from a single point.
Uniform Sound Dispersion for Multiple Listening Positions
The twelfth-generation Uni-Q disperses sound widely and uniformly, supporting group listening even outside the central listening position. The labyrinthine MAT structure behind the tweeter absorbs 99 percent of its rear sound energy, thereby reducing coloration. It does not replace acoustic room treatment.
Four Woofers Cancel Mechanical Forces
The opposing woofers cancel out their reaction forces through Force Cancelling, supporting controlled bass. Each pair operates in its own acoustic chamber to limit mutual interference.
Terminals for Single-Wiring, Bi-Wiring, and Bi-Amping
The terminals accept bare cable ends, cable boots, or banana plugs, enabling single-wiring, bi-wiring, and bi-amping. In stereo operation, each speaker is connected to the left or right amplifier channel, respectively.
An amplifier and speaker cables are required separately. When choosing an amplifier, the recommended power rating is important, as is suitability for the low minimum impedance.
Maintain Distance from Side Walls and Room Corners
The speakers require a stable, level placement. Immediate proximity to side walls and room corners should be avoided, as this can overemphasize the bass and impair the spatial image.
Adjustable spikes and the rear spirit level help with leveling; included floor protectors shield wooden floors. Due to their size and weight, two suitable people are required for transport and setup.
Sleek Cabinet with Side-Mounted Woofers
The side-mounted driver arrangement enables the cabinet shape, which tapers toward the bottom and back. Inspired by Brancusi's "Bird in Space," it was created together with Eric Chan of ECCO Design and makes a distinctive statement in the living or listening room.
Developed and Handcrafted in Maidstone
KEF develops, designs, and handcrafts the Blade series at its historic brand home in Maidstone, Kent, Great Britain.
Blade One Meta and Blade Two Meta Compared
Compared to the Blade Two Meta, the Blade One Meta offers larger woofers, higher sensitivity, and a lower free-field roll-off frequency. The Blade Two Meta requires less space, weighs less, and is priced below the Blade One Meta; it also has a higher minimum impedance. Within the narrower frequency response tolerance, it nominally reaches slightly lower, which is why the two measurements should be considered separately.
| Feature | Blade One Meta | Blade Two Meta |
|---|---|---|
| Woofers | 4 × 22.5 cm | 4 × 16.5 cm |
| Free-Field Frequency Range (−6 dB) | 27 Hz–45 kHz | 30 Hz–45 kHz |
| Frequency Response (±3 dB) | 35 Hz–35 kHz | 33 Hz–35 kHz |
| Sensitivity (2.83 V / 1 m) | 88 dB | 86 dB |
| Minimum Impedance | 2.8 Ω | 3.2 Ω |
| Dimensions with Base (H × W × D) | 159 × 36.3 × 54 cm | 146.1 × 33.8 × 47.5 cm |
| Weight per Speaker | 57.2 kg | 35.3 kg |
Suitability and Important Notes
Who is the Blade One Meta for?
- Music lovers with a high-quality stereo system and sufficient floor space.
- Listeners who want to enjoy music together from different listening positions.
Important Notes
- Room acoustics and placement affect the sound.
Conclusion
The Blade One Meta is suitable for stereo systems with sufficient space and for those who want cohesive, immersive music reproduction, even when listening together.
Warranty
Technical Data
| Product Type | Stereo Loudspeaker |
| Installation Type | Stereo Loudspeaker |
| Width | 36.3 |
| Height | 159 |
| Depth | 54 |
| Weight | 57.2 |
| Width (cm) | 36.3 |
| Height (cm) | 159 |
| Depth (cm) | 54 |
| Weight (kg) | 57.2 |
| Speaker Type | Floor-standing speaker |
| Speaker System | 3-way speaker system |
| Enclosure (sealed/bass reflex) | Bass reflex system |
| Efficiency/Sound pressure 2.83V/1m (dB) | 88 |
| Impedance (ohms) | 4 |
| Min. recommended amplifier power (W) | 50 |
| Max. recommended amplifier power (W) | 400 |
| Frequency response lower limit (Hz) | 35 |
| Frequency response upper limit (Hz) | 35000 |
| Number of tweeters | 1 |
| Tweeter diameter (cm) | 2.5 |
| Design | Stereo Loudspeaker |
| Frequency response lower limit | 35 |
| Frequency response upper limit | 35000 |
| Bass reflex system | yes |
| Efficiency/Sound pressure (dB) | 117 |
| Crossover frequency mid-high range (Hz) | 2000 |
| Number of mid-range drivers | 1 |
| Mid-range driver diameter (cm) | 12.5 |
| Number of woofers | 4 |
| Woofer diameter (cm) | 22.5 |
| Crossover frequency low-mid range (Hz) | 350 |
| Number of speaker cabinets | 2 |
| Form factor | Floor-standing speaker |
| Number of speaker cabinets | 2 |
Manufacturer information
More articles from this series
Blade One Meta
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