KEF Q Concerto Meta (Satin White)

KEF Q Concerto Meta
3-way bookshelf speaker with Uni-Q driver

The Q Concerto Meta HiFi speaker is the largest in the Q series bookshelf speaker collection. As a tribute to the original Concerto from 1969, KEF's first 3-way floorstanding speaker, this modernized version delivers professional high-end audio quality. Thanks to its 3-way design and Metamaterial Absorption Technology (MAT™), this wired speaker offers high-fidelity performance.

Revolutionary sound absorption with MAT

The core innovation of the Q series is the integrated Metamaterial Absorption Technology (MAT)1, a revolutionary breakthrough that allows the latest 12th generation Uni-Q drivers to perform with unprecedented precision and clarity.
MAT is a highly complex, labyrinth-like structure where each of the branched channels efficiently absorbs a specific frequency. Combined, the channels act like an acoustic black hole, absorbing 99% of unwanted sound coming from the back of the tweeter, eliminating resulting distortions and delivering a purer, more natural acoustic performance.

 

Deep and clear bass

The Q series features a new bass driver design4 – a hybrid structure with a flat, concave aluminum skin over a paper cone – providing stiffness to achieve piston-like motion for more bass impact and speed. Combined with a 3D
FEA-optimized surround geometry, this greatly improves linearity at higher excursions. The result is precise and agile bass control even at high output levels.
Additionally, the conical bass reflex port, modeled using computational fluid dynamics, reduces turbulence and unwanted airflow noise (known as "chuffing"). This allows the bass reflex speakers to produce cleaner and more controlled bass.

 

Crossover improved with 1000 measurements

A crucial component of the Q series is the more sensitive crossover, ensuring seamless integration of all speaker components. To achieve this, our engineers conducted over 1000 specific measurements for each speaker model in our anechoic chamber in Maidstone, UK, using a specialized reference microphone setup. Thanks to these extensive on- and off-axis measurements, our team thoroughly understood the acoustic interactions of each model and, with advanced simulations and forward-thinking prototyping, achieved a precise crossover design. This meticulous process was first applied during the development of the LS50 Meta and was further refined for the latest Blade, Reference, and R series. This ensures a precise signal path and optimizations for the best possible performance for every speaker model.

 

Shadow Flare for enhanced transparency

Shadow Flare4, derived from the flagship models, represents another enhancement for the evolved Q series. This design reduces unwanted reflections at the corners of the speaker cabinets, allowing the 12th generation Uni-Q drivers with MAT to reach their full potential. Shadow Flare is a precisely engineered surface that improves the sound radiation of the Uni-Q drivers. This means the tweeter no longer has a "line of sight" to the cabinet edges. This creates a "shadow zone" where the potential for reflections is highest, reducing the acoustic impact to a negligible level. The improved clarity and reproduction of fine details make listening a truly immersive experience. Subtle nuances like the delicate brush of a jazz brush on a cymbal or the complex overtones of a piano are rendered much more clearly with the Q series.