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KEF

KEF KUBE 8b Subwoofer Black

Based on 113 reviews
Condition: New
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$599.99

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At a glance

Condition
New
Color
Black
Size
8" Subwoofer
Model
KUBE8
Dimensions
11.6 x 11.6 x 11.6 in
Weight
24 lb
Speaker Type
Subwoofer

Features 5

  • The KUBE 8b is a 300W 8" front-firing, sealed box powered subwoofer whose output is powerful as much as it is musical.
  • Each KUBE comes with 3 pre-programmed custom EQ settings - free standing, corner, and wall and in-cabinet installations - to best suit the setup of your room.
  • Customize your KUBE even further by adjusting the gain, phase, low pass filter, and crossovers to your liking and listening habits.
  • The KUBE 8b subwoofer features KEF Smart Compression limiting, which allows the subwoofer to play louder and remain dynamic and effortlessly musical

Specs 11

Brand KEF
Model Name KUBE8B
Speaker Type Subwoofer
Recommended Uses For Product For Surround Sound Systems, For Gaming Consoles, For Computers, For Televisions, For DVD Players
Subwoofer Diameter 8 Inches
Product Dimensions 11.6 x 11.6 x 11.6 inches
Item Weight 24 pounds
Manufacturer KEF

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Similar Products

Top Amazon Reviews

Great bass
Color: Black Size: 8" Subwoofer Style: 8" Subwoofer
We paired this subwoofer with two KEF speakers. Works really well. Don't have to turn volume really high to hear.
Reviewed in the United States 🇺🇸 on May 21, 2023 by Nona
Small package big sound
Color: Black Size: 8" Subwoofer Style: 8" Subwoofer
This KEF 8" sub looks small, and it physically is. But it certainly delivers a big sound. I have a small living room and am using it only for my home theater (5.1.2) setup (all KEF). It packs a punch when a movie needs a rumble, and it fills in the bottom end when some depth is called for. If you have a big room, or want a LOT of bass, get the 12" version. I bought this to replace a Polk Audio PSW 108 10" that died after 8 months, but I haven't noticed a difference in low end punch when using the KUBE 8 Just for reference I have 4 KEF Q150s, a KEF T101C, 2 Sony SSCSE Dolby Atmos and the KUBE 8 powered by a Sony STR-DH790. The KUBE 8 is not cheap, but it is a KEF. I've been using KEF speakers since 1978, and still use my original floor standers for music through a separate amp. That means they've lasted 45 years and are still going strong. I highly recommend the KEF KUBE 8 for folks with small rooms who want a sub with a big sound. ... show more
Reviewed in the United States 🇺🇸 on February 13, 2023 by Olddude
Decent subwoofer, but there are other options
Color: Black Size: 8" Subwoofer Style: 8" Subwoofer
I paired this subwoofer with KEF LS50 Meta and Buchardt S400 MKII. Setting the crossover at 80hz and the bass volume around 50%, this subwoofer added depth and richness to the tone of the music. While it performed decently, I still think there are other great options that I'd consider over this. For music, I'd probably consider Rel's T/Zero MKIII. And as an upgrade option, perhaps the SVS 3000 Micro. I believe there could be reasons why there are a lot of used KEF Kubes floating around on eBay (for around half the MSRP) and not as many RELs or SVSs. However, all that being said, you should audition all these options (side by side if you can) and decide for yourself what might be the best option for your budget, listening environment & listening style. ... show more
Reviewed in the United States 🇺🇸 on June 28, 2022 by jskproduction
WOW Just WOW
Color: Black Size: 12" Subwoofer Style: 12" Subwoofer
I have a dedicated Theater room with an Epiqvision 120 running a marantz marantz 8012 KEF t series 301 LCR Plus RR LR BS LS Plus 2 KEF Speaker Atmos. I had the Kef T bass module but was really bummed by the fact that there is no volume control. After spending 15K on the theater, I said Self get a better Sub for real sound. I looked at Def and others but wanted to stay all KEF. So I bought the 12 Kef, I love this sub. I have owned just about every kind out there and hate how so many subs bleed on the cross over. This is the first sub that hits where it needs to and doesn't over saturate the room. Bravo. Is it pricey? Yes, but when you are setting up something that cost 15 grand, whats an additional thousand dollars to really complete the room. Thanks KEF!!! ... show more
Reviewed in the United States 🇺🇸 on October 14, 2021 by Randall F.
Good Bass!!
Color: Black Size: 10" Subwoofer Style: 10" Subwoofer
Bought this for the theater room and boy does it make a huge difference!! Very happy with the purchase. Like the fact you can adjust the levels as needed.
Reviewed in the United States 🇺🇸 on November 16, 2022 by Damon R.
DRAMATIC improvement to LS50 LSX
Color: Black Size: 12" Subwoofer Style: 12" Subwoofer
If you have the Kef LS50 / wireless or LSX this will dramatically improve your overall system sound quality. A lot of the ls50 lsx reviewers say that bass is good enough. However, you can improve on good enough to great. Not only on the bass side of things. On top, the mid and highs improve as speakers can focus on those areas while the sub does the low end work. It’s like giving the speakers steroids. I have high pass set at 105 hz and low pass at 90 hz on Lsx. The sub no sub difference is dramatic. I’ve tried with the ls50 as well but wanted the smaller profile lsx. If your have ls50 or lsx this sub makes it the best upgrade to your overall system PERIOD. ... show more
Reviewed in the United States 🇺🇸 on June 12, 2020 by Sky Guy
works perfect with LS50 speakers
Color: Black Size: 10" Subwoofer Style: 10" Subwoofer
I thought I would try a subwoofer with the new Kef LS50 speakers I recently purchased. I decided on the Kef 10" driver, the 8" would have worked fine in this small room, but what happens if you move your system to a larger room some day or move ? Good choice as it blends in perfect.... Subwoofers are subjective, it might sound terrible in this location and incredible in this location. Well this 10" works perfectly in this size room, in the corner location and with these speakers and in a stereo only set up . I cannot comment on how it would sound in a home theatre. It was very easy to set up, it has a DSP switch in back where you can set it on corner, or wall, or in open and a few more settings. Love it. ... show more
Reviewed in the United States 🇺🇸 on January 12, 2019 by BostonBoy
Good sound but defect headache with UPDATE
Color: Black Size: 10" Subwoofer Style: 10" Subwoofer
First, the sound of the Kube is great. However, mine had a defect that caused it to emit a continuous full volume bass noise randomly. The deafening noise would continue until the sub was unplugged. Happened about once every couple weeks. KEF customer service was always responsive but made me jump through hoops that included recording the noise to send to them. When they agreed to work on it, I was requested to take the sub apart myself to send the board to them or drive 3 hours, one way, to the closest authorized repair facility. I choose the latter so I wouldn’t be responsible for damaging anything. This process took several months and $100 in gas before it was repaired. Long story short, love the sound but would have appreciated a quicker and more convenient resolution from KEF. UPDATE: After KEF repair the Kube still makes the full volume noise intermittently but for short durations. Contacted KEF again and was told to try switching cables. I explained that EVERYTHING in my setup was new since the sub was originally sent back for repair so it HAS to be the sub. KEF asked me to send it back for more diagnostics! Told them I was done with this headache and they offered me a credit on a higher end model. As a huge KEF fan, I’m really disappointed in the Kube. ... show more
Reviewed in the United States 🇺🇸 on February 24, 2019 by Jon G.
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