125000 /Unit


KEF kube 12

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.

IntegrationWe’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.

Features • 56bit 50 MIPS DSP preamplifier • iBX Intelligent Bass Extension • KEF smartConnect intelligent inputs automatically detect mono or stereo and adjust the subwoofer volume level accordingly • Sealed for greater accuracy and delicate musical detail while allowing the Kube subwoofers to be installed in a cabinet • Placement tuning presets for: Free standing, Wall/in-cabinet and Corner • 300Watt Class D amplifier with DSP preamplifier/EQ.

New Product Tab

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 Requirement: 100V – 120V / 220V – 240V ~ 50 / 60Hz
Dimension (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

Get in Touch

    Office Address

    PRO FX Tech Pvt Ltd
    Barton Centre,
    Ground Floor, M.G.Road,
    Bengaluru - 560001

    Contact Us

    Tel No: 08043718978
    For Enquiries :
    For Service :
    Open on all days: 11 am to 9 pm

    Follow US

    Copyright © 2023 All Rights Reserved. PROFX