KEF Kube12b Active Subwoofer

Rs. 125,000

KEF Kube12b

12 inches bass driver active subwoofer

The Kube12b is engineered to deliver the deepest bass for music and movies, if you want to feel the earth move look no further. Perfect for creating a deep and clean rumble in large rooms. The Kube 12b has a 300 Watts Class D amplifier and a large 12 inches driver as well as iBX technology to dynamically extend bass depth.

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.

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 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.





(with Rear panel and feet / H x W x D)

410 x 393 x 410mm (16.1 x 15.5 x 16.1in.)


Powered Subwoofer (sealed)

Power Requirements

100V - 120V / 220V - 240V ~ 50 / 60Hz

Unit Measurement


Variable Low Pass Filter

40Hz - 140Hz & LFE

Frequency Response

22Hz - 140Hz (±3dB)

Maximum Output


Recommended Amplifier Power

300W RMS

Amplifier Type

Built-in Class-D

Drive Units

1 x 300mm (12in.)


RCA phono sockets Speaker level inputs

Analogue Input

RCA phono sockets Speaker level inputs


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