KEF Kube 12b (Black) is rated
out of
5 by
5.
KEF Kube 12b (Black)
Subwoofer
£749
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iBX for awesome bass you can feel
KEF’s Kube subwoofers feature iBX (Intelligent Bass Extension) for the deepest bass from the most compact cabinets. The iBX algorithm creates an extended depth of bass that easily exceeds expectations – even for a subwoofer of this size. Backing this up is a powerful 300 watts, Class-D amplifier. This is enough to power the high quality 12" bass unit to very high levels and ultra-low frequencies. With effortless bass on tap, the Kube 12b is ideal for both movies and music.
Power, controlled
Despite its high power rating, the KEF Kube is about more than just firepower. The sealed cabinet not only offers high levels of rigidity but also gives a tight, controlled bass that's never overblown or sloppy. A 3-position DSP (EQ) control allows adjustment of the Kube's response to compensate for different room acoustics and personal preference. There's also a phase switch. This lets you reverse the phase, giving perfectly timed bass whether the sub is in front or behind you.
Effortlessly stylish
Most subs deserve to be hidden away, but not the Kef Kube! Featuring smooth lines, a wrap-around grille and gloss black top panel, the Kube 12b is one subwoofer you’ll be happy to have on display. As the flagship model, the Kube 12b is perfect for larger rooms, where its expansive sound fills out the space with ease.
Let the KEF Kube 12b take you to the extremes of bass – just don’t forget to ask the neighbours around!
Overview
Speaker Type Enclosure - Filter
Infinite baffle sealed
Audio
Crossover Frequency (Hz)
40 - 140
Driver Units
12 inch driver
Frequency Response (Hz)
22 - 140
Power Rating (Watts)
300
Features
Auto On/Off
Yes
Dimensions
Dimensions WxHxD (mm)
393 x 410 x 410mm
Weight
Weight (KG)
20.6
Rated 1 out of
5
by
Gm0wzo from
Waiting fo subwoofer
Ordered on 27/1/2021 still waiting on confirmation that order is on its way
Date published: 2021-02-07
Rated 5 out of
5
by
writerjohn from
Not Just Movies But Music Shakes the Walls As Well
I wanted to see if this would bring the lowest octaves to my KEF LS50 speakers which it does. With careful matching the sub is adding just to lowest 40hz down to 22hz when such material is present on a recording.
Of note both the Level and Cut-Off Frequency knobs have click detents, so that it is possible to adjust with accuracy the setting of each control. Adjustment of one click up or down is repeatable. I found the Cut Off Freq two clicks up from 40hz and the Level 11 clicks up from minimum works well and matches the LF performance of my LS50 system to that of a pair of Monitor Audio Silver 500.
Not mentioned anywhere that I could see is the Auto Power Down (the LED Red when Off, Green when On) which works well.
The only problem I had was initially attempting to use the high level speaker inputs which induced hum. That might be my cabling, but using a Pre Amp out with a long Phono to Phono cable fixed that.
I should add that I sometimes leave it switched off, the LF performance of the LS50 while light is sometimes pleasing enough. However in full flight the Kube 12 will remove windows and plaster adding serious heft to bass drum or organ music.
Date published: 2020-03-21
Rated 5 out of
5
by
Jleeck from
Smooth and great for music!
I have a pair of Kef 107 without its matching Kube equalizer. I tried using a DSP in the analog domain to correct the bass response but sound quality suffered too much. Then I tried adding a bass reflex sub and it sounded better, but the intergration was poor. The sub was too obvious, to the point of being intrusive. Decided to try out the Kef 12b since it is a sealed design. It works much better with the 107, and is now much more seamless.
Date published: 2019-01-16
Rated 5 out of
5
by
hnick from
Compact and works well with my 103/3 older kef's
A bit pricy but Give me more of a natural live sound than I had before, very good.
Date published: 2018-06-30
Rated 5 out of
5
by
Anonymous from
Sleek sub
Excellent sub looks very sleek and sounds amazing x
Date published: 2018-04-02
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