KUBE 8b is a Sealed type Powered Subwoofer by KEF with a frequency range of 34-140 Hz. It was released in 2018. It features 1 x 8" Woofer, and powered by a Class D 300 watts amplifier.
KEF KUBE 8b Lifestyle
KUBE 8b is a member of KEF's KUBE series of Powered subwoofers. The KUBE range are KEF's powered subwoofers with DSP room control. Below you can see the main specs of these subwoofers as well as review and comparison links.
KEF KUBE Series Subwoofers
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Frequency Response
Where should the crossover go? → · What will your room do to this bass? →
KEF KUBE 8b has a Frequency response range of 34-140 Hz at ±3dB.
Here we have a comparison of how KUBE 8b's Low and High frequency values compare with the average, max and min Low and High frequency values in its class.
Low Frequency
Powered Subwoofers
High Frequency
Subwoofer Speakers
Among all subwoofers in our database with a max MSRP price of 750$, these are the 5 Powered Subwoofer models that can reach deeper bass levels than the KEF KUBE 8b's 34Hz:
Low-Pass CrossoverKEF KUBE 8b has a variable Low-pass filter (LFP) which lets you choose a frequency level between 40-140 Hz in order to block any frequencies above that point from reaching the amplifier.
KEF KUBE 8b Back View
Inputs and Outputs
- PreampLevel Inputs: Stereo RCA/LFE
- SpeakerLevel Inputs: No
- SpeakerLevel Outputs: No
- Wireless: No
KEF KUBE 8b External Dimensions and Weight
KEF KUBE 8b has external dimensions of (Height x Width x Depth) 11-9/16 x 11-5/8 x 13-5/16inch (294.0 x 296.0 x 339.0mm ).
Base Surface Area
Base surface area of a loudspeaker may become a determining factor when the space in your room or desk is limited.
The base area of KEF KUBE 8b is approximately 1003.4cm2 / 155.5inch2.
To get a better perspective on the real life size of KEF KUBE 8b, let's compare it with a standard size Compact Disc which has a diameter of 4.7inch (120mm).
KEF KUBE 8b Speaker Size Compared to a Compact Disc
Here we place the KEF KUBE 8b virtually next to a standard width amplifier and turntable on a media center to get a better idea about the size.
KEF KUBE 8b Subwoofer next to a Media Stand
Find speakers that fit your shelf or alcove →
WeightThe KEF KUBE 8b weighs 11.36kg / 25lbs. Weight of a subwoofer is an important factor when you need to move and reposition the unit often to find the optimal positioning, also known as 'Subwoofer Crawling'. Here is a comparison of how KUBE 8b's weight compares with the average, max and min weights in its class.
Weight
All Subwoofer Speakers
Weight
Subwoofer Speakers under $750
Cabinet type and Materials
KEF KUBE 8b has a
Acoustic Suspension type cabinet. Acoustic suspension aka Sealed subwoofers are preferred for music oriented systems whereas the Ported subwoofers are generally accepted to be more suitable for home theatre systems.
What's in the Box of KEF KUBE 8b?
Here are the items that are included inside the box of KUBE 8b:
- Powered subwoofer
- 6.5-feet AC power cord
- Speaker-level input block
- User Manual
- Important Safety Information
- Warranty Information
Recommended Accessories
Here is a list of accessories that we think you may need for the KEF KUBE 8b.
Warranty
2 Years of parts warranty and 2 Years of labor warranty is generally provided by the manufacturer.
| General |
| Brand | KEF |
| Full Model Name | KEF KUBE 8b |
| Type | Powered Subwoofer |
| Release Date | 2018 |
| Frequency Response | 34-140 Hz |
| Enclosure Type | Sealed |
| Enclosure | Acoustic Suspension |
| Firing Direction | Front |
Amplifier & Driver |
| Power (RMS) | 300 watts |
| Amplifier Type | Class D |
| Woofer | 8-inch |
| Controls & Connections |
| Low-pass Crossover | 40-140 Hz |
| Phase Control | Yes |
| Room Correction | Yes |
| Built-in DSP | Yes |
| Wireless | No |
| Line-level Inputs | Stereo RCA/LFE |
| Speaker-level Inputs | No |
| Speaker-level Outputs | No |
Physical |
| Dimensions (HxWxD) | 11-9/16" x 11-5/8" x 13-5/16" (294.0 x 296.0 x 339.0mm) |
| Weight | 11.36 kg (25 lbs) |
| Mounting Bracket | No |
| Parts Warranty | 2 Years |
| Labor Warranty | 2 Years |