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KEF Kube 10b 10 inch Subwoofer
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KEF Kube 10b 10 inch Subwoofer KEF Kube 10b 10 inch Subwoofer

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KEF Kube 12b 12 inch Subwoofer

KEF Kube 12b 12 inch Subwoofer

KEF Kube 8b 8 inch Subwoofer

KEF Kube 8b 8 inch Subwoofer

KEF Kube 10b 10 inch Subwoofer

The perfect balance of size and deep bass. With a 10-inch driver, the Kube10b is the middle sibling that offers flexibility across a range of mid-sized rooms.

Special Price $1,140.00 Regular Price $1,295.00

4K SteelBook BluRay Promo

From November 1st to December 31st, Buy a KEF Kube 8, 10, or 12 inch Subwoofer and receive a BONUS 4K SteelBook BluRay from a selection of new release and coming soon titles.

With the KEF Kube 8, you will receive 1x Bonus 4K Steelbook. The Kube 10, receive 2x Bonus Steelbooks. The Kube 12, receive 3x Bonus Steelbooks.

Movie Selections:

  • Spider-man: Far From Home
  • Joker (Pre-Order)
  • Lion King (Pre-Order)
  • Once Upon a Time in Hollywood (Pre-Order)
  • X-Men Dark Phoenex
  • Gemini Man (Pre-Order)
  • Captain Marvel
  • IT Chapter 2 (Pre-Order)
  • Fast and Furious: Hobbs & Shaw (Pre-Order)
  • Shazam
  • The Predator
  • Mission Impossible 6: Fallout
  • Jurassic World: Fallen Kingdom

To claim your bonus 4K Steelbook BluRay, you must register your purchase at and complete the required fields, including name, address, email, contact number, where you purchased from, a copy of the invoice, and select your movie(s) of choice via the available list. All registrations will be subject to approval. Once you submit your registration, your bonus offer will be delivered according to the release date of the movie (we often will not know the release date). All registrations must be submitted within 14 days from the promotional end date of 31st of December, 2019.

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.
Easy configuration


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.
Model Kube10b
Design Powered Subwoofer (sealed)
Drive Units 1 x 250mm (10in.)
Frequency Response 24Hz - 140Hz (±3dB)
Maximum Output 111dB
Inputs RCA Phono sockets. Speaker level inputs
Amplifier type Built-in Class-D
Recommended Amplifier Power 300W RMS
Variable low pass filter 40Hz - 140Hz & LFE
Analogue Input RCA phono sockets Speaker level inputs
Power requirements 100V - 120V / 220V - 240V ~ 50 / 60Hz
Dimensions (with Rear panel and feet / H x W x D)
370 x 353 x 370mm
Weight 17.4kg
Unit measurement Piece
Document Download Brochure
Information Sheet
User Manual
Remarks KEF reserves the right, in line with continuing research and development, to amend or change specifications. E&OE.