Kef R3 Standmount Speakers

£1,300.00

Brand Kef

Decades of experience and Kef's unbridled passion for music come together in the new R Series. It combines innovations drawn from the Reference Series with new bespoke technologies to ensure the new R Series delivers more detail, deeper insight and greater excitement.

The R3 stand mount shares the same Uni-Q driver array as the range topping R11 in a full range true 3-way speaker the R3 has a powerful 165mm (6.5 in.) bass driver and a 125mm (5 in.) midrange driver with 25mm (1 in.) aluminium dome tweeter Uni-Q array that pushes performance to new extremes.

For starters, Uni-Q’s midrange motor system has been completely redesigned using KEF’s in-house simulation and analysis tools as well as decades of experience. The motor is responsible for converting the audio signal from an electrical voltage to a mechanical force. Ideally it does this without any loss and without introducing any distortion. For a midrange driver, significant distortion can be generated due to modulation of the voice coil inductance. The motor in the new R Series has a shaped and undercut pole, and symmetrical aluminium demodulation rings, which combine to significantly reduce the inductance in the lower midrange so there is less variation as the voice coil moves.

To maximise bass performance in the new R Series, the dedicated low-frequency drivers are built using a two-part structure, where a shallow concave aluminium skin sits atop a paper cone. This stiffness combined with the cone’s unique geometry reduces additional resonances and delivers the pistonic movement that makes these drivers time so well.

The new drivers also benefit from a completely redesigned magnet system that creates a more even magnetic field, and a design of suspension that reduces harmonic distortion for a cleaner, more precise sound.

The result is tight, agile bass that digs out all the soul and punch available in the low end.

All the cabinets in the new R Series benefit from Constrained Layer Damping bracing. Originally developed for the multiple award-winning LS50, this system utilises internal braces joined to the panels by a lossy interface rather than being adhered to it rigidly. This approach is highly effective at dissipating unwanted vibrations.

A new internal bracing layout works alongside Constrained Layer Damping to create an incredibly inert platform from which the drive units can work their magic, enabling the R Series to deliver music as it is supposed to sound, without any unwanted extras.

Specifications

DESIGN

Three-way bass reflex

WEIGHT

13.5 kg (29.8 lbs.)
 
 

DIMENSION (H X W X D)

422.2 x 199.6 x 335.5 mm (16.6 x 7.9 x 13.2 in.) with terminal*
 
 

DIMENSION (H X W X D)

422 x 199.6 x 312 Cabinet only
 
 

SENSITIVITY

(2.83V/1m) 87dB



CROSSOVER FREQUENCIES

400Hz, 2.9kHz

 

FREQUENCY RANGE

38Hz-50kHz (-6dB)

 

TYPICAL IN-ROOM BASS RESPONSE

30Hz (-6dB)
 
 

FREQUENCY RESPONSE

58Hz-28kHz (±3dB)
 
 

HARMONIC DISTORTION

<0.3% 130Hz-20kHz (90dB, 1m)
 
 

MAXIMUM OUTPUT

110dB
 
 

AMPLIFIER POWER

15-180W


NOMINAL IMPEDANCE

8Ohms (min.3.2Ohms)

 

DRIVE UNITS

Uni-Q Driver Array:
HF: 25mm (1in.) vented aluminium dome
MF: 125mm (5in.) aluminium cone
Bass Driver:
LF: 165mm (6.5in.) hybrid aluminium
 
 

FINISHES

Black Gloss / White Gloss / Walnut

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