Regular Price $1,650.00 Special Price $1,349.00

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KEF KUBE 12b 12-Inch Subwoofer

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KEF KUBE 12b 12-Inch Subwoofer

KEF KUBE 12b 12-Inch Subwoofer delivers impressive bass to a large area with more depth, fester response and cleaner stage. It features a 12-Inch driver with a built-in Class D amplifier in a sealed cabinet design. The Kube12b utilises a sophisticated iBX, Intelligent Bass Extension, Technology to achieve deeper and cleaner image response, and efficient integration between amplifier, driver and cabinet. With 3 DSP controlled EQ settings, you can optimise your desired listening taste wherever you place your subwoofer.

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 optimization to a whole new level. Delivering immersive music and home theatre sound that takes you to 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

Kube subwoofers offer unmatched setup 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 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.
Key Features
  • iBX Intelligent Bass Extension
  • KEF smartConnect intelligent inputs detection
  • Class D Amplifier
  • DSP preamplifier/EQ