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KEF R8A Atmos Speakers (Pair)


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Found it cheaper? Click here. SKU: KEFR8A
Ex VAT: £665.83

R8A is the dedicated Atmos speaker from the completely redesigned KEF R range ideal paired with any bookshelf or floorstanding speaker model in the range.

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Warranty length 5 Years
Brand KEF Speakers

Tech Specs

- Design: Two-way bass reflex
- Driver units: Uni-Q Array
- HF: 1" vented aluminium dome
- MF/LF: 5.25" aluminium cone
- Crossover frequency: 2kHz
- Freq Range: 96Hz-19.5kHz (-6dB)
- Freq Response: 105Hz-18.5kHz (±3dB)
- THD: <0.3% 200-20k Hz (90dB, 1m)
- Maximum Output: 106dB
- Amp Power: 25-150W (recommended)
- Nominal Impedance: 8O (min 3.2O)
- Sensitivity: 86dB (2.83V/1m)
- Dimensions (HWD): 174 x 175 x 259mm
- Weight: 4.45kg (83.1 lbs)

Product Description

KEF R3 speakers redefine standmount performance and benefit from the same drivers as the range-topping R11. A true 3-way speaker, the 6 inch bass driver pushes bass performance to new extremes. The 5 inch midrange driver and 1 inch aluminium dome tweeter create a Uni-Q array that defies the expectations from the most compact main speaker in the range.

Uni-Q Driver

Placing the tweeter in the acoustic centre of the midrange cone brings the acoustic ideal of a single point source closer to realisation. The new R Series benefits from a new 12th generation of the legendary Uni-Q which has been extensively designed using KEFs in-house simulation and analysis tools. KEFs engineers have been able to dramatically reduce colouration through reducing resonance in the minute gaps between Uni-Qs separate elements. The resulting sound is purer, more precise and makes stereo imaging far more believable.

Shadow Flare

Derived directly from the Reference Series, the Shadow Flare is an innovative method of reducing harmful cabinet diffraction for delicate high-frequencies. Shadow Flare is a carefully profiled transition surface which extends the waveguide effect of Uni-Q. The tweeter no longer has line of sight of the cabinet edges, creating a shadow region at the points where the potential for diffraction is highest. The result is vastly improved fine detail, particularly when it comes to the subtle nuances of plucked strings and other percussive sounds.

Low Freq Drivers

Bass is the very foundation of music; everything is built upon it and maximising bass performance is a vital building block towards pristine sound. R Series bass drivers are built using a two-part structure, where a shallow concave aluminium skin sits atop a paper cone. This great stiffness, combined with the cones unique geometry, delivers pure piston-like movement to deliver punch and speed. To accurately control this mighty driver, KEF has also completely redesigned its magnet system to create a more even magnetic field. The overall result is more impressive and impactful.

Cabinet Bracing

A solid platform is imperative for great sound. The new R Series benefits from Constrained layer damping. This system utilises internal braces joined by a lossy interface and is highly effective at dissipating unwanted vibrations that would otherwise artificially change the sound and music.

Flexible Port

When it comes to generating deep, articulate bass, port design is crucial. The ports in R Series feature innovative flexible walls. Using computational fluid dynamics, the flare and profile of each port is calculated to delay the onset of turbulence, while the flexible port walls prevent longitudinal resonances from colouring the midrange.


All crossovers have a reduced component count. This has been made possible due to the decoupler in the Uni-Q midrange as well as the improved tweeter, both of which have inherently smoother responses and require less correction from the crossover. The series resistors in the MF and HF sections are merely to change the output level of these drivers to match that of the bass drivers. The HF section features a tuned circuit in parallel with the driver. This tuned to the fundamental resonance frequency of the driver and allows the series capacitor to have the correct attenuation. Without it, there would be an excessive movement of the diaphragm and an unwanted hump in the response.

Visual design

All R Series cabinets are designed to look good. They have clean lines, there is a choice of ‘finishes - black gloss, white gloss, walnut, and the frontal aspect is slim. The quality of fit and finish is high and for those who prefer not to see drivers, there is the option of magnetically attached grilles. The grilles are designed to have minimal effect on sound quality.

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