KEF R7 Three Way Bass Reflex Floorstanding Speaker (Pair)

385,000.00

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Description

Uni-Q

The evolution of KEF’s Uni-Q driver reaches its 12th generation in the R Series. Using simulation and analysis tools KEF’s engineers have been able to dramatically reduce colouration by cutting resonance in the tiny gaps between Uni-Q’s elements. The result is purer and more precise sound with stronger imaging.
KEF R Series 12th generation Uni-Q driver

Shadow Flare

The Shadow Flare is an innovative way to cut harmful high frequency cabinet diffraction. It’s a carefully profiled transition that extends the waveguide effect of Uni-Q. The treble escapes naturally because the ‘shadow region’ stops it getting to the cabinet edges. The result is vastly improved fine detail.
KEF R Series shadowflare

Low Frequency Drivers

R Series bass drivers have a two-part structure with a shallow concave aluminium skin atop a paper cone. Combine this stiffness with the cone’s unique geometry and you get near pistonic movement for punch and speed. KEF has also increased linearity in the magnet system which means more impressive and impactful bass.
KEF R Series Woofers

Flexible Port Technology

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

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.
KEF R Series cabinet has been designed to dissipate unwanted vibrations

SPECIFICATION 


ModelR7
DesignThree-way bass reflex
Drive UnitsUni-Q Driver Array:
HF: 25mm (1in.) vented aluminium dome
MF: 125mm (5in.) aluminium cone
Bass Driver:
LF: 2 x 165mm (6.5in.) hybrid aluminium
Crossover frequency400Hz, 2.9kHz
Frequency range (-6dB)
Typical in-room bass response (-6dB)
33Hz – 50kHz
27Hz
Frequency response (±3dB)48Hz – 28kHz
Harmonic distortion (90dB, 1m)<0.3% 100Hz – 20kHz
Maximum output110dB
Amplifier power (recommended)15 – 250W
Nominal Impedance8Ω (min.3.2Ω)
Sensitivity (2.83V/1m)88dB
Weight *31.4 kg (69.2 lbs.)
Dimension (H x W x D)
with terminal *
1062 x 200 x 383.5 mm
(41.8 x 7.9 x 15.1 in.)
Dimension (H x W x D)
with terminal with Plinth *
1108.9 x 310.6 x 383.5 mm
(43.7 x 12.2 x 15.1 in.)
FinishesBlack Gloss / White Gloss / Walnut

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