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KEF

The World's First Speakers with Metamaterial

LS50 Meta is a highly precise, emotionally engaging loudspeaker built on revolutionary acoustic technology. Designed around the Uni-Q 12th Generation with Metamaterial Absorption Technology driver array, this solid, compact loudspeaker is capable of delivering detailed sound anywhere in the room.

TECHNICAL SPECIFICATIONS
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)

85dB

IN THE BOX

1 Pair LS50 Meta Speakers

DIMENSIONS
Dimension (H x W x D) with Rear Panel and Feet*

302 x 200 x 280.5 mm (11.9 x 7.9 x 11.0 in.)

Weight*

7.8 kg (17.2 lbs.)

* Measurement per unit

WHAT HI-FI? AWARDS 2022 - PRODUCT OF THE YEAR

“KEF has taken an excellent speaker and made it even better with its innovative Metamaterial tech. The LS50 Meta are now the class leader at this level.” - October 2022, What Hi-Fi? 

FULL REVIEW

Every note. Every word. Every detail.

Great loudspeakers disappear, leaving just the music. The KEF LS50 Meta is such a loudspeaker. The incredibly immersive sound means you lose yourself in your favourite music. Savouring every nuance as layer upon layer of instrumentation is delivered with exceptional acoustic accuracy anywhere in the room.

Metamaterial Absorption Technology

A truly revolutionary tool in the KEF acoustic armoury, Metamaterial Absorption Technology (MAT™) is a highly complex maze-like structure that absorbs 99% of the unwanted sound from the rear of the driver, eliminating the resulting distortion and providing purer, more natural sound.

Every spot is the sweet spot 12th generation Uni-Q with MAT™

Using advanced simulation and analysis tools, KEF engineers have developed the 12th generation Uni-Q with MAT™. This new driver array delivers reduced colouration, less distortion, and a sound that is more transparent and life-like than previously possible, all evenly dispersed throughout the room.

Enhancement from the legendary LS50 lineage

The LS50 Meta disappears, leaving just the music. Enhancements include Driver Performance Optimisation and patented off-set flexible port for the best acoustic performance and an incredible immersive sound.

Curved for performance

LS50 Meta's low-diffraction, curved baffle is precision modelled around the Uni-Q driver array. Its smooth curved surfaces help radiate sound out across the baffle without any interference from hard edges, which cause diffraction. The result is cleaner, more precise sound.

Braced for action

LS50 Meta's baffle is engineered from an injection-moulded Dough Moulding Compound (DMC), while inside the cabinet cross bracing and Constrained Layer Damping (CLD) combine to deaden internal vibrations. The result of such meticulous attention to detail is the lowest colouration of any speaker in its class.

Flexible port

Using Computational Fluid Dynamics (CFD), the port flare and profile of LS50 Meta’s patented off-set port is calculated to delay the onset of turbulence, and the flexible port walls prevent resonances from colouring the midrange. This leads to improved clarity, with exceptional depth and detail.

The LS50 Collection White Paper