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999.99

KUBE 12b Subwoofer

CA $ 999.99

Discover sound’s hidden depths with KEF Kube subwoofers. The Kube unleashes explosive power intelligently thanks to iBX technology that extends bass depth dynamically. Delivering immersive music and home theatre sounds that drive you deeper into the heart of the performance.

The Kube 12b features a 12" bass driver powered by a 300 watt RMS bespoke class D amplifier and 3 custom EQ settings for easy placement.

Product Features
KEF KUBE Subwoofers provide deep rich bass and are the best home theater subwoofers.
SOUND
Hear new dimensions in sound with Kube subwoofers

The Kube 12b effortlessly unleashes explosive power. iBX technology dynamically extends bass depth and KEF’s unique ability to design, build and integrate the driver in-house takes optimisation to a whole new level. Delivering immersive music and home theatre sound that takes you to the heart of the performance.

KEF KUBE Subwoofers are front firing sealed cabinets. Perfect for heart pounding bass during even the most itnense movies.
Immersiveness

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.

Easily connect the KUBE Subwoofer to any system and configure for your room using KEF's simple dsp options.
Easy configuration

Kube subwoofers offer unmatched set up flexibility. A range of LFE, line and speaker-level inputs, phase selection and DSP controlled EQ settings help you get the best from a Kube. Put it in a convenient position, match it to any main speaker or type of music system, and start exploring new depths in the sound.

KEF's line of KUBE Subwoofers come in three sizes to fit any space.
DESIGN
Integration

KEF is quite possibly the only high-end manufacturer that designs, engineers and assembles the driver, cabinet and circuitry in-house. This level of integration means we are commited to pure sound and the Kube stays true to that ideal. The result is a driver and amplifier that are perfectly in tune.

SOUND
Hear new dimensions in sound with Kube subwoofers

The Kube 12b effortlessly unleashes explosive power. iBX technology dynamically extends bass depth and KEF’s unique ability to design, build and integrate the driver in-house takes optimisation to a whole new level. Delivering immersive music and home theatre sound that takes you to the heart of the performance.

Immersiveness

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

Kube subwoofers offer unmatched set up flexibility. A range of LFE, line and speaker-level inputs, phase selection and DSP controlled EQ settings help you get the best from a Kube. Put it in a convenient position, match it to any main speaker or type of music system, and start exploring new depths in the sound.

DESIGN
Integration

KEF is quite possibly the only high-end manufacturer that designs, engineers and assembles the driver, cabinet and circuitry in-house. This level of integration means we are commited to pure sound and the Kube stays true to that ideal. The result is a driver and amplifier that are perfectly in tune.

Reviews 4

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Spec
Model Kube12b Subwoofer
DESIGN Powered Subwoofer
DRIVE UNITS 1 x 300mm (12in.)
FREQUENCY RANGE 22Hz - 140Hz (±3dB)
MAXIMUM OUTPUT 114dB
AMPLIFIER TYPE Built-in Class-D
AMPLIFIER OUTPUT 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)
410 x 393 x 410mm (16.1 x 15.5 x 16.1in.)
WEIGHT 20.6kg

** KEF reserves the right, in line with continuing research and development, to amend or change specifications. E&OE. **

Press and Awards
KEF KUBE12b Sound and Vision Review
KUBE12b Sound and Vision Review
"Watching the standard Blu-ray version with 5.1 sound, the KEFs grabbed on and wouldn't let go. From the roar of the engines to the synthesizer-heavy score, they kept my attention riveted.”
Year: 2019
Magazine / Issuing Body: Sound and Vision
Country of Publication: United States
Product: KUBE12b Subwoofer

KEF KUBE12b EISA Best Product 2018-2019 Home Theater Speaker System
KUBE12b EISA Home Theater Speaker System Best Product 2018/2019 Award
Year: 2018
Magazine / Issuing Body: EISA
Country of Publication: United Kingdom
Product: KUBE12b Subwoofer
KEF KUBE12b EISA AWARD

KEF KUBE12b Review & Award Best Subwoofer 2018 Sound and Vision
KUBE12b Review & 5-Star Bass: Best Subwoofers of 2017/2018 Award
"Reviewed as part of KEF’s 5.1.4 Dolby Atmos-enabled Q Series system, the Kube12b received high praise from veteran reviewer Mark Fleischmann, who gave the 12-inch/300-watt subwoofer 5 stars for Performance and Value. He was particularly enamored with how the sub handled the “thunderous” pipe-organ blast on Vaughan Williams’ Job/Symphony No. 9 (Chandos SACD). “I’m impressed by how much performance KEF got out of the $700 price of the Kube12b sub,” Fleischmann wrote. “A legend has to be earned. KEF continues to earn it.”
Year: 2018
Magazine / Issuing Body: Sound and Vision
Country of Publication: United States
Product: KUBE12b Subwoofer

KEF KUBE12b Subwoofer Review from AVS Froum
KUBE12b Review & 2018 Top Choice Award
“In the past, KEF may not have been on your radar when it comes to affordable high-performance subs. But competition among subwoofer makers is fierce and now things are different. For delivering something close to the ideal “living room sub” at its size and price point, I’m giving the KEF Kube 12b a well-deserved AVS Forum “Top Choice 2018” award."
Year: 2018
Magazine / Issuing Body: AVS Froum
Country of Publication: United States
Product: KUBE12b Subwoofer
KEF KUBE12b Subwoofer Review from AVS Froum

KEF KUBE12b Subwoofer Review from Hi-Def Digest
KUBE12b Review
“Outside of the budget-busting (for me, at least) $1700 R400b, I've never been a huge fan of KEF's more affordable subwoofers, but that all changes with the KUBE 12b. Powered by a 300w Class D amp and custom circuitry, the 12b punches above its class and capabilities, producing deep, buttery bass perfect for those who love to FEEL music and movies."
Year: 2018
Magazine / Issuing Body: High-Def Digest
Country of Publication: United States
Product: KUBE12b Subwoofer
Downloads
KUBE 8b/10b/12b Brochure • Open In New Window
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KUBE 8b/10b/12b Product Manual • Open In New Window
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KUBE 8b/10b/12b Subwoofer Information Sheet Open In New Window
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