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KEF R3 Speakers (Pair)

 

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Found it cheaper? Click here. SKU: KEFR3
Ex VAT: 1083.33
£1,300.00

Award winners bookshelf speakers in KEF's latest R series range, benefiting from the same drivers as the range-topping R11 floorstanders. Pre order, due soon

Available. To discuss, please call us on 0121 224 7300/7401

Condition:Brand new in original retail packaging

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Features

Warranty length 5 Years
Brand KEF Speakers
Product Award What HiFi Award 5 Stars

Tech Specs

- Design: Three-way bass reflex
- Driver units: Uni-Q Array
- HF: 1" vented aluminium dome
- MF: 5" aluminium cone
- LF: 6.5" hybrid aluminium
- Crossover: 400Hz, 2.9kHz
- Freq Range: 38Hz-50kHz (-6dB)
- Typical Bass Response: 30Hz (-6dB)
- Freq Response: 58Hz-28kHz (±3dB)
- THD: <0.3% 130-20k Hz (90dB, 1m)
- Maximum Output: 110dB
- Amp Power: 15-180W (recommended)
- Nominal Impedance: 8O (min 3.2O)
- Sensitivity: 87dB (2.83V/1m)
- Dimensions (HWD): 422 x 199.6 x 336mm
- Weight: 13.5kg (29.8 lbs)

Product Description

KEF R3 bookshelf speaker redefines standmount performance and benefits from the same drivers as the range-topping R11. A true 3-way speaker, the 6" bass driver pushes bass performance to new extremes. The 5" midrange driver and 1" 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 KEF’s in-house simulation and analysis tools. KEF’s engineers have been able to dramatically reduce colouration through reducing resonance in the minute gaps between Uni-Q’s 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 cone’s 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.

Crossover

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 (L1/C2) 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 ‘nishes – 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.

Press Reviews

  • What Hi-Fi Award 2018 "Best standmount £1000-£2000" (What Hi-Fi magazine)

  • '…The R3s offer a large chunk of the Reference 1’s engineering content and sonic performance at a fraction of the cost… Overall build quality is terrific. The enclosure feels immensely rigid thanks to some clever bracing techniques that combine reinforcement with damping. On the outside, these speakers look classy and are finished beautifully. Despite being relatively slim and compact boxes – the KEFs stand just 42cm high – the R3s are capable of delivering a good amount of bass weight and authority. In our test room they sound most balanced well away from all walls.' (What Hi-Fi Magazine September 2018)
  • 'The KEFs capture the natural acoustic of the recording superbly, showing a level of insight and detail resolution way beyond most rivals. Despite all the analysis it remains a musical performer, one that focuses the listener’s attention on the message …The R3s sound much bigger than they are, delivering an excellent stereo soundstage that is well organised, precise and nicely focused.' (What Hi-Fi Magazine September 2018)
  • 'Tonally, the presentation is balanced and natural. There’s no emphasis of any particular frequency band to make the speakers sound more interesting or exciting. This even-handed nature means that the speakers sound right at home across a wide range of recordings, and refuse to favour any particular musical genre above another.' (What Hi-Fi Magazine September 2018)
  • 'The R3s are brilliant all-rounders. They’re expertly sonically balanced and work well across a wide range of systems, but give them a top class feed and they will deliver a sound good enough to worry most standmounters below the two grand mark. This is one to buy with confidence.' (What Hi-Fi Magazine September 2018)
  • 'Arguably the most complete standmounters available at this price, the KEF R3s are exceptional performers. FOR: Exceptional insight and resolution, balanced and entertaining sound, excellent build and finish. AGAINST: Nothing at this price.' (What Hi-Fi Magazine September 2018)

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