Q750 Speaker Package

Q750 | Q250C | Q50A | Kube10 | AVR3700



Award-winning depth and clarity.
Everybody deserves great sound. Which is why KEF’s Q Series takes cutting-edge acoustic technology from ranges such as the legendary REFERENCE and Blade loudspeakers to a wider selection of people. Representing exceptional value, the Q Series continues to win awards globally by unlocking detail and depth in whatever you choose to listen to.

“Sit anywhere” Uni-Q sound
The Uni-Q driver array places the tweeter in the centre of the midrange and bass cone, bringing the acoustic ideal of a single point source closer than ever. The result, enhanced by KEF’s ‘tangerine’ waveguide over the tweeter, is a more accurate three-dimensional sound that’s dispersed evenly throughout the room.

Tweaking the tweeter
With the addition of the damped tweeter loading tube providing a gentle termination of sound produced from the back of the tweeter, lower treble performance is improved dramatically and a new low-distortion inductor on the crossover provides cleaner bass.

A word about drums and bass
The Q Series reproduces the nuances of bass instruments with ease. With a larger roll surround and new suspension KEF drivers produce cleaner bass at high volumes. A new cone structure improves midrange clarity and an enhanced Auxiliary Bass Radiator (ABR) with a new surround and rear suspension enhances bass quality.

New system design
Putting the Uni-Q driver in its own sealed cabinet reduces the load on the cone and increases clarity and detail while delivering cleaner bass. Midrange clarity is enhanced by driver improvements that mean the DC blocking capacitor to be eliminated from the crossover, allowing a more natural roll-off between drivers.

Kube Subwoofers
Explore new dimensions in sound with Kube, KEF’s powerful range of subwoofers that open up sound’s hidden depths.

Each elegantly designed, fully sealed unit unleashes explosive power effortlessly, intuitively, intelligently. iBX technology extends the bass depth dynamically, unlocking the full potential of the driver’s power at normal listening levels or even the most extreme. And with KEF’s unique capability to design, build and integrate the driver in-house, we take optimisation to a whole new level. Delivering immersive music and home theatre sounds that drive you deeper into the heart of the performance.

Go deep or go home. KEF’s design and engineering team worked in chorus to develop iBX. This Intelligent Bass Extension algorithm creates an extended depth that unlocks the full potential of the custom driver. Giving you unparalleled precision and ultimate synchronicity between amplifier, driver and sealed cabinet.

Easy configuration
Your room, your rules. Kube subwoofers offer unmatched flexibility in configuration. With a range of LFE, line & speaker-level inputs, Phase selection and 3 DSP controlled EQ settings to help match your sub to any room placement, you’re in control right out of the box. Set up the Kube where it’s most convenient to you, match it to any main speaker or with any type of music system and start exploring new depths in your sound.

We’re on the same page. KEF is quite possibly the only high-end manufacturer who designs, engineers and assembles the driver, cabinet and circuitry in-house. This level of integration is the hallmark of our commitment to pure sound and the Kube stays true to that ideal. What you get is a driver and amplifier so perfectly attuned they sing in absolute harmony.

• Formidable 56bit 50 MIPS DSP preamplifier
• iBX Intelligent Bass Extension: The DSP analyses your input signal and applies KEF’s iBX, allowing the subwoofer to play louder and remain dynamic at any listening level
• Sophisticated proprietary DSP programming developed by KEF’s UK engineering team
• KEF smartConnect intelligent inputs automatically detect mono or stereo and adjust the subwoofer volume level accordingly
• Sealed for greater accuracy and delicate musical detail while allowing the Kube subwoofers to be installed in a cabinet
• Placement tuning presets for: Free standing, Wall/in-cabinet and Corner meaning the Kube sounds perfect wherever it’s installed
• Imposing 300Watt Class D amplifier with DSP preamplifier/EQ


Upgrade to a Superior Home Theater Experience
Denon AVR-X3700H 9.2 channel 8K AV receiver with 105W per channel that fully supports 3D audio formats like Dolby Atmos®, Dolby Atmos Height Virtualization Technology, DTS:X®, DTS Virtual:X™ and IMAX® Enhanced, as well as the latest HDMI specifications such as 8K/60Hz, 4K/120Hz passthrough, VRR, ALLM, Dynamic HDR, HDR10+ and eARC support.

High-performance discrete 9-channel amplifier
Full 8K/60Hz and 4K/120Hz support
Enjoy your favorite 3D audio formats
Enhanced Audio Return Channel (eARC) HDMI support
The latest in video compatibility
The next generation in movie immersion
The latest in gaming experiences
New DSP for more processing power
Works with your favorite voice services
Wireless streaming from the most popular music services
HEOS® Built-in wireless multi-room music streaming technology

Delivers a dynamic 105W per channel (8 ohms, 20Hz-20kHz, THD: 0.08%, 2 ch. driven) to provide a trusted, precise and powerful Denon sound experience.
With the latest HDMI support, enjoy 8K quality video from your 8K source devices. One 8K input and 2 outputs allow for 8K/60Hz and 4K/120Hz pass-through. 8K upscaling is available on all 8 HDMI inputs.
Enjoy immersive, 3D audio from sources like Dolby Atmos®, Dolby Atmos Height Virtualization, DTS:X®, DTS Virtual:X™ and IMAX Enhanced.
Through the main HDMI output, connect your TV with eARC HDMI support to allow uncompressed and object-based audio formats like Dolby Atmos and DTS:X directly from your smart TV app to your AV receiver.
The latest HDR format support including HDR10, HDR10+ (new in 2020), HLG, Dolby Vision, as well as Dynamic HDR (New in 2020), to provide the greatest picture quality for brightness, clarity and contrast.
With 8K/60Hz pass-through and upscaling, Dynamic HDR and Quick Media Switching (QMS), enjoy crystal clear picture in the highest quality available.
With 4K/120Hz pass-through, Variable Refresh Rate (VRR), Auto Low Latency Mode (ALLM) and Quick Frame Transport (QFT), enjoy your gaming experience with amazing imaging with reduced lag.
With 11.2ch max audio processing, connect an external power amplifier to the AVR-X3700H to power two extra channels to enjoy a 11.2ch home theater setup.
Use your voice to control the AVR-X3700H and wireless music services hands-free with Amazon Alexa, Google Assistant, Apple Siri, and
Enjoy all of your favorite music services like Spotify®, Pandora®, Amazon Music HD, TIDAL, SiriusXM, Deezer and more. The AVR-X3700H also lets you enjoy your music via AirPlay 2, letting you stream your favorite tracks from Apple Music.
Listen from any room for a connected, whole-home audio experience. The AVR-X3700H also works with the newly introduced Denon Home speakers to let you enjoy a whole-home audio experience.

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Two and a Half-Way Bass Reflex Floorstanders 

  • Frequency response : 48Hz-28kHz (±3dB)
  • Power : 15-150W
  • Sensitivity : 88dB
  • Impedance : 8 Ohms (min.3.8 Ohms)
  • Driver Size       : 1 x 165mm (6.5in.) aluminium Uni-Q
    • 1 x 25mm (1in.)vented aluminium dome HF
    • 1 x 165mm (6.5in.) aluminium LF,
    • 2 x 165mm (6.5in.) aluminium ABR
  • Dimensions (HxWxD) : 923 x 210 x 306 mm
    • 977 x 323 x 310 mm (with Plinth)
  • Weight                       : 20.6kg (45.4 lbs)



Two and a Half-Way Bass Reflex Centre Speaker


  • Frequency response : 68Hz-28kHz (±3dB)
  • Power   : 10-100W
  • Sensitivity  : 87dB (2.83V/1m)
  • Impedance  : 8 Ohms (min. 3.4 Ohms)
  • Driver Size  : 130mm (5.25in.) aluminium Uni-Q
    25mm (1in.) vented aluminium dome HF
    2 x 130mm (5.25in.) aluminium ABR
  • Dimensions (HxWxD)  : 180 x 525 x 214 mm
    184 x 525 x 214 mm (with Rubber Feet)
  • Weight          : 5kg(16.5 lbs)


Two Way Bass Reflex Surround

  • Frequency response : 105Hz-18.5kHz (±3dB)
  • Power : 10-100W
  • Sensitivity : (2.83V/1m) 86dB
  • Impedance                               : 8 Ohms (min.4.6 Ohms)
  • Driver Size : 130 mm (5.25in.) aluminium Uni-Q
    • 25 mm (1in.) vented aluminium dome HF
  • Dimensions (HxWxD) : 174 x 180 x 259 mm
    • 178 x 180 x 259 mm with rubber feet
  • Weight : 4.25kg (9.4 lbs)


500W, Powered Subwoofer 

  • Frequency response : 24 to 140Hz (±3dB)
  • Power : 300W Built-in Class D amplifier
  • Driver Size         : 1 x 250mm (10in.)
  • Dimensions (HxWxD) : 370 x 353 x 370mm (14.6 x 13.9 x 14.6in.)
  • Weight : 17.4kg


9.2ch 8K AV Receiver with 3D Audio,Voice Control and HEOS® Built-in

• 135W x 9ch (6 ohms, 0.7%, 2ch driven) 11.2 Processing and pre-out • 8K/60Hz & 4K/120Hz supported for the best movie and gaming experience • Dolby Atmos, Dolby Atmos Height Virtualization, DTS:X, DTS Virtual:X, IMAX Enhanced Support 7 HDMI inputs, 3 HDMI outputs • Audyssey MultEQ XT32, Dynamic Volume/ EQ • Voice control with Amazon Alexa, Siri (via AirPlay 2) and Google Assistant AirPlay 2 / Bluetooth / Network Streaming, HEOS® Built-in.

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