KEF Kube 8b (Black)

Buy online/in-store/Telesales
£549
Buy online/in-store/Telesales
KEF Kube 8b (Black) is rated 4.8 out of 5 by 4.
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KEF Kube 8b (Black)

Subwoofer
£549
Buy online/in-store/Telesales
Compare (3 max)
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Disabled assistance

All products that are available to purchase on the Richer Sounds website can be delivered free to blind, partially sighted or those with a disability. Find out more

Please contact web after sales for more info.
For delivery of in-store only deals, please contact your local store for more details.
Ts&Cs apply - see our delivery page.
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Deep bass from a compact cabinet – the KEF Kube 8b is a room-friendly subwoofer.

iBX for powerful 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 for this size of sub. Backing this up is a powerful 300 watts, Class-D amplifier. This is enough to power the high quality 8" bass unit to high levels and low frequencies. With effortless bass on tap, the Kube 8b 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 8b is one subwoofer you’ll be happy to have on display. Being the smallest in the range, the Kube 8b is also easy top to fit in tight spaces and ideal for smaller rooms.

Compact yet powerful, the KEF Kube 8b offers a punchy sound without the bulk.
Overview
Speaker Type Enclosure - Filter
Infinite baffle sealed
Audio
Crossover Frequency (Hz)
40 - 140
Driver Units
8 inch driver
Frequency Response (Hz)
34 - 140
Power Rating (Watts)
300
Features
Auto On/Off
Yes
Dimensions
Dimensions WxHxD (mm)
310 x 293 x 293mm
Weight
Weight (KG)
11.3
Rated 5 out of 5 by from Simple set up Connected the KEF Kube 8b to my 13 year old Denon PMA-700AE amp with Audioquest Black Lab 2M cables and appreciated the Kubes control options. The additional low bass notes are subtle and not overpowering in my 5.5 x 4M room.
Date published: 2020-11-04
Rated 4 out of 5 by from Good replacement I bought this when my old Kef sub gave up, and it's a fine updated product
Date published: 2020-03-09
Rated 5 out of 5 by from Perfect fit I bought the KEF sub a couple of weeks ago and am delighted not only with it's performance in enhancing the low end sound of my system, but also how unibtrusive it us both physically and soundwise. Whilst filling in the extreme low end which my KEF Q350s cannot quite reach, the bass is smooth and consistent.
Date published: 2018-07-09
Rated 5 out of 5 by from great sound from such a small sub i wanted the 10b but settled for the 8 glad I did kicks out all the base I want!
Date published: 2018-04-23
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6 Year Guarantee

£54.85 - Fully refundable if unused.

Add our 6 Year Guarantee to your basket when you check out. We'll cover your items for 6 years
and give you your money back if unused.

Fully refundable if unused

6 Year Guarantee costs just £9.99 on all items under £100, or 10% of purchase
price on anything over £100.

We think you'll agree our 6 Year Guarantee offers fantastic value. What's more, if you don't use it
in the 6-year period, we'll refund the cost of it. You really can't say fairer than that!

Plus, if we can't fix a fault, we will give you a replacement.

Find out full details here.


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  • Purchase rate 21.9% p.a. (variable)
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