KEF R7 Meta 3-Way Floorstanding Loudspeaker in Black Gloss (Each) - SP4055B1AA

KEF SP4055B1AA R7 Meta 3-Way Floorstanding Loudspeaker in Black Gloss (Each)

The KEF R7 Meta SP4055B1AA in Black Gloss is the mid-sized floorstanding member of the R Series, built to be as powerful as it is flexible. This passive three-way bass reflex speaker brings high-fidelity stereo music and cinematic sound to life through a carefully integrated driver complement. A vented aluminium dome tweeter, aluminium midrange cone and two hybrid aluminium bass drivers work across their dedicated frequency ranges, creating the full transparency and jaw-dropping realism that let recordings and movie soundtracks make a convincing impact.

At the acoustic heart of the R7 Meta is KEF's 12th generation Uni-Q driver array with Metamaterial Absorption Technology. By combining the tweeter and midrange into a unified array, the speaker presents voices, instruments and effects with natural detail throughout the listening space rather than reserving its best performance for one narrow position. MAT helps suppress unwanted sound generated behind the driver, reducing a source of distortion so music and dialogue emerge with greater purity. Below the Uni-Q array, twin 6.5 in hybrid aluminium bass drivers supply the accurate, dynamic low-frequency foundation needed for both punch and speed.

Every part of the R7 Meta supports its clear, controlled presentation. Shadow Flare helps fine treble detail escape without harmful interaction at the cabinet edges, while internal damping addresses vibration that could intrude on the performance. The flexible bass reflex ports are shaped to manage turbulence and resonance, helping the midrange remain clean as the low end develops. For visual flexibility, the dedicated multi-layer microfibre grille attaches magnetically and is engineered to preserve performance with the drivers covered. Use the R7 Meta for focused music listening or combine it with matching R Series models to create an immersive multichannel movie system.

Key Features

Sit Anywhere, Hear Every Detail

The 12th generation Uni-Q array operates as a single point source, spreading sound more evenly around the room. Its broad dispersion minimizes the restricted sweet spot, allowing more listeners to enjoy the same natural, finely resolved presentation.

Absorbs 99% of Unwanted Sound

Metamaterial Absorption Technology uses a complex, maze-like structure behind the driver to absorb 99% of unwanted rear radiation. By preventing that energy from returning through the diaphragm, MAT reduces the resulting distortion and reveals a purer sound.

A Flare for Detail

Derived from The Reference, Shadow Flare forms a carefully profiled transition around Uni-Q that continues the array's waveguide effect. Its shadow region keeps high-frequency energy away from the cabinet edges, cutting diffraction so subtle treble information comes through more clearly.

Performance Critical Damping

Constrained layer damping joins internal braces through a lossy interface. That material turns unwanted cabinet vibration into heat, providing the quiet, solid platform the drivers need to perform without added cabinet sound.

True Bass Definition

Each low-frequency driver places a shallow, concave aluminium skin over a paper cone. The stiff two-part construction and specialized geometry promote piston-like motion, while a broad, uniform magnetic field supports bass with impressive punch, speed and impact.

Flexible Port for Cleaner Bass

Computational fluid dynamics informs the flare and profile of each port to postpone the onset of turbulence. Flexible port walls also resist resonances that could color the midrange, keeping attention on the output of the drivers.

Dedicated Microfibre Grilles

Multiple layers of suede-like microfibre create a precise cover with 1801 cut holes for each driver. Magnetic fixings hold the grille securely in place, maintaining the clean R Series styling while supporting performance when the drivers are concealed.

Features

• 12th Gen Uni-Q Technology
  Wide, even dispersion helps listeners beyond a single seat hear a detailed and natural presentation.
• Metamaterial Absorption Technology
  Rear-wave absorption controls an unwanted source of driver distortion for greater sonic purity.
• Three-Way Bass Reflex Design
  Dedicated high-, mid- and low-frequency drivers divide the audio range for transparent reproduction.
• Twin 6.5 In Hybrid Aluminium Bass Drivers
  Rigid two-part cones deliver low frequencies with dynamic punch and quick response.
• Shadow Flare
  A profiled surround limits treble diffraction at the cabinet edges to preserve fine information.
• Performance Critical Damping
  Braced constrained-layer construction dissipates unwanted cabinet vibration as heat.
• Flexible Bass Ports
  Calculated port profiles and compliant walls reduce turbulence and midrange-coloring resonance.
• Magnetic Microfibre Grille
  A multi-layer, precision-perforated cover provides a secure fit without sacrificing speaker performance.
• 15 - 250W Amplifier Recommendation
  The specified power range supports appropriate amplifier matching for this passive speaker.
• R Series Home Theater Flexibility
  Matching R Series speakers can join the R7 Meta in an immersive multichannel movie system.

Warranty Information

• Drivers: 5 years
• Electronics: 2 years
• Accessory: 2 years