HiFi Speakers

Q50a Dolby Atmos-Enabled Surround Speaker

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  • Regular price HK$4,180
Q50A SURROUND SPEAKER - SATIN BLACK is currently on pre-order and will be shipped within 4-6 weeks. You will receive a shipping confirmation email once your order is ready to be shipped.

Satin Black
Satin White

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      Dolby Atmos flexible surround

      Dolby Atmos offers the potential for full immersion cinema, the Q50a uses Uni-Q technology to deliver it in full effect. Optimised for Q Series home theatre systems the Q50a Dolby Atmos-Enabled Surround Speaker features the latest Uni-Q driver array and advanced technology for serious dynamics and accurate, clean sound.

      Q50a Dolby Atmos-Enabled Surround Speaker

      Q50a brings immersive Dolby Atmos height to Q Series home theatre systems. It is also easily mounted on the wall for a high-fidelity surround sound experience. Its Damped Tweeter Loading Tube produces a detailed and natural high frequency sound, and the styling means the Q50a will blend seamlessly into any interior.

      The Details


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      4.25kg (9.4 lbs)

      Dimension (H x W x D)

      174 x 180 x 259 mm
      178 x 180 x 259 mm with rubber feet


      2-way Closed Box

      Unit Measurement



      (2.83V/1m) 86dB

      Frequency Range Free Field

      96Hz-19.5kHz (-6dB)

      Frequency Response

      105Hz-18.5kHz (±3dB)

      Crossover Frequencies


      Maximum Output


      Amplifier Requirements


      Nominal Impedance

      8 Ohms (min.4.6 Ohms)

      Drive Units

      130mm (5.25in.) aluminium Uni-Q
      25mm (1in.) vented aluminium dome HF

      Crossover Frequencies



      Black / White
      KEF reserves the right, in line with continuing research and development, to amend or change specifications. E&OE. * Measurement per unit


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      "Effects transitions across the array are seamless, soundscapes have immersive three dimensionality, and there’s an effortless nature to its delivery that beguiles."

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      "This Q Series package delivers an outstandingly cinematic and largescale presentation (with Atmos highs) from well-built speakers."



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      What is Dolby Atmos? 
      In real life, sound comes from all around. But conventional surround systems only allocate it horizontally – left, right, ahead and behind. What makes Dolby Atmos so staggeringly realistic is that the movement of every sound in the scene is reproduced in all three dimensions, including vertically. This creates a true 3D acoustic image of precisely located individual sounds that move in relation to you as if you were actually there. The effect is uncanny. Exhilarating. Sometimes scary, sometimes hilarious; always engrossing.
      How does it work?
      Dolby Atmos is infinitely more flexible and adaptable than channel-based home theatre. When a Dolby Atmos stream is fed to a Dolby Atmos compatible A/V receiver, the receiver will render the object-based audio to your home theatre’s unique speaker configuration to precisely recreate the sound the filmmakers intended. Dolby Atmos has the ability to adapt to diverse speaker setup. You can enjoy the full effect with just seven KEF speakers.
      What do I need? 
      With an A/V receiver or pre-processor that supports Dolby Atmos decoding and playback in your system, you can play Dolby Atmos content at home through any Blu-ray disc player or game console, or via your favourite streaming service (with the device set to bitstream output and secondary audio disabled). Then it’s a just question of choosing your extra speakers – and for home theatre audiophiles, that means KEF.

      KEF gives you two ways of reproducing Dolby Atmos soundtracks – either by installing Ci Series flush-mount speakers in the ceiling, or simpler still, adding the sensational new KEF Q50a up-firing Dolby Atmos-enabled speaker module to your front and rear satellites. Either way, it’ll transform your enjoyment of film.
      Q50a Dolby Atmos-enabled Speakers
      KEF’S new Q50a Dolby Atmos-enabled speakers sit above your existing floorstanding or bookshelf home theatre speakers. Knowing how the brain perceives sound, KEF engineers have perfected a way of beaming the sound upwards so that it’s reflected by the ceiling to replicate the vertical dimension in Dolby Atmos recordings. Integrating perfectly with Q Series range aesthetically as well as sonically, the closed-box design of the Q50a is built around the Uni-Q array developed for the revolutionary KEF Blade. With a sophisticated 25mm (1-in.) tweeter at the centre of a 130mm (5.25-in.) bass/mid driver and KEF’s ‘tangerine’ waveguide to maximise dispersion, it has excellent dynamics with accurate, fast and clean midrange response. And as the speaker footprint is the same, no more space is required.
      Ci Series In-Ceiling Speakers
      Alternatively, for the most cinema-like Dolby Atmos experience, you can add two or four of KEF’s Ci Series in-ceiling speakers to your existing home theatre set-up. Discreet and easy to install, they share the same point source Uni-Q array with ‘tangerine’ waveguide. Which you specify will depend on the size of the area and your power handling needs. The Ci160QR has a 19mm (0.75-in.) vented tweeter in a 160mm (6.5-in.) bass/mid driver; the Ci200QR uses a 25mm (1-in.) vented tweeter in a larger 200mm (8-in.) bass/mid driver for greater LF extension. The high-output Ci200RR-THX with THX Ultra2 approval steps up to a 38mm (1.5-in.) vented tweeter in a 200mm (8-in.) bass/mid driver with a massive magnet assembly for the deepest bass response. And with KEF’s Ultra-thin Bezel (UTB) design, they all lie practically flush with the ceiling with minimum visual intrusion.

      Whichever you choose, you’ll be upgrading to a whole new dimension in home theatre enjoyment. Heightened emotions and physical sensations. More intense involvement with what’s on screen. A more complete experience – the one the director intended.
      Dolby, Dolby Atmos, Dolby Surround, and the double-D symbol are trademarks of Dolby Laboratories.
      THX, the THX logo, and Ultra2 are trademarks of THX Ltd. THX and the THX logo are registered in the U.S. and other jurisdictions. All rights reserved.


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      5.1.2 Setup
      Featuring 2 x Q50a and 1 x subwoofer
      Featuring 2 x In-ceiling speakers and 1 x subwoofer
      5.1.4 Setup
      Featuring 4 x Q50a and 1 x subwoofer
      Featuring 4 x In-ceiling speakers and 1 x subwoofer
      Dolby, Dolby Atmos, Dolby Surround, and the double-D symbol are trademarks of Dolby Laboratories.
      THX, the THX logo, and Ultra2 are trademarks of THX Ltd. THX and the THX logo are registered in the U.S. and other jurisdictions. All rights reserved.

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