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.
KEF KUBE 12b Subwoofer
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Optional Wireless Adapter is available
KEF 12” 300W Subwoofer. 1x 300mm driver. 22~140Hz. 114dB. RCA phono sockets. Speaker level inputs.
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.
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.
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.
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 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.
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
DIMENSIONS (with Rear panel and feet / H x W x D) 410 x 393 x 410mm (16.1 x 15.5 x 16.1in.)