KEF LS50 Meta Standmount Speaker

Since 1961, KEF‘s mission has been to preserve the integrity of original sound with as little intervention as possible. The goal of every KEF product is to do one thing: provide you with a revealing listening experience that is as true to the original recording as is possible within the confines of your room. The iconic LS50 was the physical embodiment of this singular approach. A loudspeaker that took its cues from the classic LS3/5A but was quickly recognised as a modern icon in its own right. The LS50 was born out of KEF’s willingness to think outside the box, to constantly search for new materials, techniques and technologies such as the use of computer aided design and continuous enhancement of the KEF’s signature Uni-Q driver array. That was 2011, and time and technology have moved on. Since then KEF’s engineers have been upholding KEF’s driving philosophy and searching out new technological breakthroughs. The result is an icon in waiting : the KEF LS50 Meta Standmount Speakers. Instantly recognisable as the successor of the LS50, the KEF LS50 Meta is born of the same KEF desire for continual development and is therefore fittingly the first loudspeaker to employ Metamaterial Absorption Technology1.

The KEF LS50 Meta is a result of joint development with the Acoustic Metamaterials Group, using Metamaterial Absorption Technology (MAT) breaks completely new ground in loudspeaker design, and once again demonstrates KEF’s unrelenting passion for developing new technologies to improve your listening experience. Metamaterials are specially developed structures that use existing materials in such a way that they exhibit new, desirable properties that are simply not found in naturally occurring substances. A truly revolutionary tool in the KEF acoustic armoury, MAT is a highly complex maze-like structure, where each of the intricate channels efficiently absorbs a specific frequency. When combined, the channels act as an acoustic black hole, absorbing 99% of the unwanted sound that comes from the rear of the tweeter, eliminating the resulting distortion and providing a purer, more natural acoustic performance.

Technical Specifications

Model: LS50 Meta

Design: Two-way bass reflex

Drive units: Uni-Q Driver Array:

HF: 25 mm (1 in.) vented aluminium dome with Metamaterial Absorption Technology

MF/LF: 130 mm (5.25 in.) aluminium cone

Crossover frequency: 2.1 kHz

Frequency range: (-6dB)47 Hz – 45 kHz

Typical in-room bass response: (-6dB)26 Hz

Frequency response (±3dB): 79 Hz – 28 kHz

Harmonic distortion (90dB, 1m): <0.4% 175 Hz – 20 kHz<0.1% 300 Hz – 10 kHz

Maximum output: 106 dB

Amplifier power (recommended): 40 -100 W

Nominal impedance: 8 Ω (min. 3.5 Ω)

Sensitivity (2.83V/1m): 85 dB

Weight: 7.8 kg (17.2 lbs.)

Dimension (H x W x D): with terminal 302 x 200 x 280.5 mm (11.9 x 7.9 x 11.0 in.)