The Q Concerto Meta HiFi speaker is the largest in our Q Series bookshelf speaker collection. Paying tribute to the original 1969 Concerto, which was our first 3-way standmount speaker, this modernised version delivers professional high-end audio quality. Thanks to its 3-way design and Metamaterial Absorption Technology (MAT™), this wired speaker is sure to deliver high-fidelity performance.

Speaker Technology & Innovation

Metamaterial Absorption Technology (MAT™)
The crucial advancement in the Q Series is the integration of Metamaterial Absorption Technology (MAT™). MAT is a highly complex maze-like structure that absorbs 99% of the unwanted noise from the rear of the driver, eliminating the resulting distortion and providing a purer, more natural sound.

WHAT HI-FI? AWARDS 2020 - 'INNOVATION OF THE YEAR'
“KEF has taken an excellent speaker and made it even better with its innovative Metamaterial tech. The LS50 Metas are now the class leader at this level.” - September 2020, What Hi-Fi?

Uni-Q®
A 12th generation Uni-Q® driver array with MAT™ is found in all eight models of the Q Series. Uni-Q® acts as a single point source to disperse sound more evenly through the room, allowing everybody, wherever they are in the room, to enjoy the same natural, detailed sound for an immersive entertainment experience.

The building block of KEF signature sound
KEF’s many pioneering innovations are all geared towards delivering breath-takingly natural sound; sound that lets you enjoy music as it was meant to be heard. Of all these pioneering developments, it is the Uni-Q® driver array that sits at the heart of almost all our speakers.

Speaker Performance

3-way speaker
The evolved Q Series has been upgraded from a 2.5-way to a 3-way system design which ensures precise separation of high, mid, and low frequencies. This updated configuration significantly improves detail and clarity, bringing your music and movies to life.*

Deep and clean bass
The Q Series features a hybrid bass driver design that provides stiffness to achieve a piston-like movement for better bass punch and speed. Combined with a port modelled using Computational Fluid Dynamics (CFD), this results in precise and agile bass management even at high output levels. *

Refined crossover
A critical component of the Q series is the refined crossover, which ensures seamless integration of all speaker parts. More than 1,000 specific measurements are taken for each speaker model, allowing precise signal path and optimisation for best possible performance.

Shadow flare
Derived from the flagship models, Shadow Flare is a carefully profiled transition that extends the waveguide effect of Uni-Q. This design reduces unwanted cabinet diffraction, allowing the treble to escape naturally without reaching the cabinet edges. The result is vastly improved fine detail reproduction.*

Design

Detail by Design
The Q Series speakers feature a contemporary minimalist design with a satin finish that offers a premium, subtle glow. Available in Satin Black, Satin White, and Walnut finishes, they are designed to blend effortlessly into any interior.

Magnetic Grilles
Colour-matched grilles are included with the speakers. The magnetic fixing provides a secure and precise fit, in keeping with the clean and seamless styling of the Q Series.

Specifications

Design

Three-way bass reflex

Drive units

Uni-Q Driver Array:
HF: 19 mm (0.75 in.) vented aluminium dome with MAT
MF: 100 mm (4 in.) aluminium cone

Bass Unit: 
LF: 165 mm (6.5 in.) hybrid aluminium cone

Frequency range (-6dB)

40 Hz - 20 kHz

Typical in-room bass response (-6dB)

36 Hz

Frequency response (±3dB)

48 Hz - 20 kHz

Crossover frequency

430 Hz, 2.9 kHz

Amplifier requirements

15 - 180 W

Sensitivity (2.83V/1m)

85 dB

Harmonic distortion (90dB, 1m)

<2% 37 Hz and above
<1% 91 Hz - 20 kHz

Maximum output

108 dB

Impedance

4 Ω (min. 3.2 Ω)

Weight *

9.5 kg (20.9 lbs.)

Dimension (H x W x D) with terminal *

415 x 210 x 315 mm (16.3 x 8.3 x 12.4 in.)

Finishes

Satin Black / Satin White / Walnut