KEF Kube12b, Kube10b, Kube8b User Manual
Kube12b / Kube10b / Kube8b Subwoofers
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 eortlessly, 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.
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 amplier, driver and sealed cabinet.
Easy conguration
Your room, your rules. Kube subwoofers oer unmatched exibility in conguration. 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.
Integration
We’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 amplier
so perfectly attuned they sing in absolute harmony.
Kube12b
Kube10b
Kube8b
Features
• Formidable 56bit 50 MIPS DSP preamplier
• iBX Intelligent Bass Extension: The DSP analyses your input signal and
applies KEF’s iBX, allowing the subwoofer to play louder and remain
dynamic at any listening level
• Sophisticated proprietary DSP programming developed by KEF’s UK
engineering team
• 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
meaning the Kube sounds perfect wherever it’s installed
• Imposing 300Watt Class D amplier with DSP preamplier/EQ
Specications
Model Kube12b Kube10b Kube8b
Design Powered Subwoofer (sealed) Powered Subwoofer (sealed) Powered Subwoofer (sealed)
Drive units 1 x 300mm (12in.) 1 x 250mm (10in.) 1 x 200mm (8in.)
Frequency response 22Hz - 140Hz (±3dB) 24Hz - 140Hz (±3dB) 34Hz - 140Hz (-6dB)
Maximum output 114dB 111dB 105dB
Amplier type Built-in Class-D Built-in Class-D Built-in Class-D
Amplier power 300W RMS 300W RMS 300W RMS
Variable low pass lter 40Hz - 140Hz & LFE 40Hz - 140Hz & LFE 40Hz - 140Hz & LFE
Inputs RCA phono sockets
Speaker level inputs
Power requirements 100V - 120V / 220V - 240V
~ 50 / 60Hz
Dimension (H x W x D)
with rear panel and feet
Weight 20.6kg 17.4kg 11.3kg
Visit: KEF.COM for more about KEF and its products.
KEF reserves the right, in line with continuing research and development, to amend or change specications. E&OE.
410 x 393 x 410 mm
16.1 x 15.5 x 16.1 in.
RCA phono sockets
Speaker level inputs
100V - 120V / 220V - 240V
~ 50 / 60Hz
370 x 353 x 370 mm
14.6 x 13.9 x 14.6 in.
RCA phono sockets
Speaker level inputs
100V - 120V / 220V - 240V
~ 50 / 60Hz
293 x 293 x 310 mm
11.5 x 11.5 x 12.2 in.
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