KEF Kube12b 12" Active Subwoofer - Black
The deep rumble in your big living room. With a large 12-inch driver, the Kube12b is the largest of the family. Delivering a deeper bass for large rooms.
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 anda 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.
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.
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 amplifier so perfectly attuned they sing in absolute harmony.
DESIGN Powered Subwoofer (sealed)
DRIVE UNITS 1 x 300mm (12in.)
FREQUENCY RESPONSE 22Hz - 140Hz (±3dB)
MAXIMUM OUTPUT 114dB
INPUTS RCA Phono sockets. Speaker level inputs
AMPLIFIER TYPE Built-in Class-D
RECOMMENDED AMPLIFIER POWER 300W RMS
VARIABLE LOW PASS FILTER 40Hz - 140Hz & LFE
ANALOGUE INPUT RCA phono sockets Speaker level inputs
POWER REQUIREMENTS 100V - 120V / 220V - 240V ~ 50 / 60Hz
DIMENSIONS (with Rear panel and feet / H x W x D) 410 x 393 x 410mm (16.1 x 15.5 x 16.1in.)