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KEF

KEF Kube12b 12 Inch 300 Watt Powered Subwoofer (Black)

  • Based on 128 reviews
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Availability: Only 1 left in stock, order soon!
Fulfilled by Amazon
Arrives Friday, Aug 22
Order within 7 hours and 59 minutes
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Color: Black


Size: 12" Subwoofer


Style: 12" Subwoofer


Features

  • The KUBE 12b is a 300W 12" 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 12b subwoofer features KEF Smart Compression limiting, which allows the subwoofer to play louder and remain dynamic and effortlessly musical.
  • Enjoy KEF Smart Connect, which automatically detects whether an LFE or stereo input is connected and adjusts subwoofers volume level accordingly.

Description

KEF cube 12B subwoofer

Brand: KEF


Speaker Maximum Output Power: 300 Watts


Audio Output Mode: Mono


Mounting Type: Floor Standing


Model Name: KUBE12B


Speaker Type: Subwoofer


Special Feature: bass_boost


Recommended Uses For Product: For Surround Sound Systems, For Gaming Consoles, For Televisions, For Computers, For DVD Players


Compatible Devices: Television


Subwoofer Diameter: 12 Inches


Unit Count: 1.0 Count


Controller Type: Corded Electric


Color: Black


Included Components: Subwoofer


Product Dimensions: 16.1"D x 16.1"W x 15"H


Item Weight: 44 Pounds


Is Waterproof: FALSE


Warranty Type: Full Warranty


Number of Items: 1


Control Method: Remote


Speaker Size: 12 Inches


Power Source: Corded Electric


Woofer Diameter: 12 Inches


Vehicle Service Type: Car


Water Resistance Level: Not Water Resistant


Connectivity Protocol: Wi-Fi


Includes MP3 player?: No


UPC: 637203215322


Global Trade Identification Number: 22


Manufacturer: KEF


Item Weight: 44 pounds


Item model number: KUBE12


Is Discontinued By Manufacturer: No


Date First Available: November 8, 2017


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Friday, Aug 22

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Top Amazon Reviews

    • KEF 10b plus pair if KEF LSX ii makes a really fantastic desktop music system
Color: Black Size: 10" Subwoofer Style: 10" Subwoofer
The LSX ii powered speakers are very crisp and precise but have minimal bass. The 10b subwoofer fixes this completely - in fact I can’t imagine a better system for a sit/stand desk. The KEF connect iOS app handles settings and has a great interface for multiple streaming services. Apple airplay also works very well casting the music collection from my Mac. WiFi interconnect works well but I recommend using the provided cable to connect the right to the left LSX. The standard (as opposed to expert) settings in the KEF app work well, as does following the app’s advice to set the volume on the 10b half way up (with the indicator pointing straight up) and also leaving the subwoofer volume in the KEF app at half way (5 out of 10). The one thing I changed was moving the speaker/subwoofer balance slider in the app almost all the way to subwoofer. Curiously, if you select KEF 10b as the subwoofer model, the app moves that slider all the way to the speaker end. If you then move the slider toward subwoofer, which is a good idea, the app changes the subwoofer model to custom. Go figure. Again, this combination of powered speakers is a superb desk setup, but maybe not so much if you have neighbors through a wall. ... show more
Reviewed in the United States on February 29, 2024 by Eric Stromquist
    • Superb sound, nice look.
Color: Black Size: 12" Subwoofer Style: 12" Subwoofer
Bass is deep and punchy. Excellent build quality and nice finish. Well worth the price.
Reviewed in the United States on April 3, 2024 by JeffT
    • 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
    • Excellent subwoofer to complement KEF speaker system
Color: Black Size: 8" Subwoofer Style: 8" Subwoofer
Impressive bass from this subwoofer. Pair this subwoofer with a set of KEF speakers for incredible sound quality. Would highly recommend!
Reviewed in the United States on January 22, 2024 by Celestial99
    • Great sub!
Color: Black Size: 10" Subwoofer Style: 10" Subwoofer
Review Image by Lyle Stewart Lyle Stewart
Love this addition to the system. Adds depth to everything. Using it with NAD C 338 amp, KEF LS 50 speakers & Dual CS 429 turntable. Also do stream digital sources, but for me nothing like an LP. Went back and forth trying to decide which KEF Kube to buy. Purchased the 10b. Have it in a medium sized room with 10’ ceilings and it is a perfect match. Genres I primarily listen to are jazz, pop & classic rock. Recently inherited my father’s record collection and am starting to warm up to classical music from his collection. Highly recommended ... show more
Reviewed in the United States on March 31, 2024 by Lyle Stewart Lyle Stewart
    • 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.
    • 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

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