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  1. Home
  2. KEF Speakers
  3. Powered Subwoofers
  4. KEF Kube 8 MIE
KEF Kube 8 MIE Subwoofer Review
KEF Kube 8 MIE - Front View

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Main Features

  • 8" Polypropylene Woofer
  • 300 watts RMS Output
  • 34-140 Hz Frequency Response
  • Built-in DSP with Room Correction
  • Weight: 20.80 lbs / 9.40kg
  • Dimensions (H x W x D): 11.5" x 11.5" x 12.2"
MSRP: $700 (list price)
Check price atAmazon›
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KEF Kube 8 MIE Subwoofer Review
KEF Kube 8 MIE KEF Kube 8 MIE
Check price atAmazon›

Made by KEF · United Kingdom · since 1961 · sold through dealers

Kube 8 MIE is a Sealed type Powered Subwoofer by KEF with a frequency range of 34-140 Hz. It was released in 2022. It features 1 x 8" Polypropylene Woofer, and powered by a Class D 300 watts amplifier.

KEF Kube 8 MIE  Lifestyle
KEF Kube 8 MIE Lifestyle

Kube 8 MIE is a member of KEF's KUBE MIE series of Powered subwoofers. The KUBE MIE range are the updated generation of KEF's KUBE powered subwoofers. Below you can see the main specs of these subwoofers as well as review and comparison links.

See all 4 KEF KUBE MIE models compared »

KEF KUBE MIE Series Subwoofers
Model Frequency Woofer Amp Power Weight
KEF Kube 8 MIE
34-140 Hz 8" 300 watts 9.4kg
KEF Kube 10 MIE
Compare
20-140 Hz 10" 300 watts 15.4kg
KEF Kube 12 MIE
Compare
22-140 Hz 12" 300 watts 18.6kg
KEF Kube 15 MIE
Compare
20-140 Hz 15" 300 watts 27.5kg

Frequency Response

Where should the crossover go? →  ·  What will your room do to this bass? →

KEF Kube 8 MIE has a Frequency response range of 34-140 Hz at -6dB.

Here we have a comparison of how Kube 8 MIE'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
KEF Kube 8 MIE
Min
Average
Max
High Frequency
Subwoofer Speakers
KEF Kube 8 MIE
Min
Average
Max

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 8 MIE's 34Hz:

  • OSD Nero DueVoce DualX8 with Low Frequency of 17 Hz (Compare w/ Kube 8 MIE)
  • Definitive ProSub 1000 with Low Frequency of 18 Hz (Compare w/ Kube 8 MIE)
  • GoldenEar ForceField 3 with Low Frequency of 18 Hz (Compare w/ Kube 8 MIE)
  • SVS PB-1000 with Low Frequency of 19 Hz (Compare w/ Kube 8 MIE)
  • SVS SB-2000 with Low Frequency of 19 Hz (Compare w/ Kube 8 MIE)

Low-Pass Crossover

KEF Kube 8 MIE 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 8 MIE Back View
KEF Kube 8 MIE Back View

Inputs and Outputs

  • PreampLevel Inputs: Stereo RCA/LFE
  • SpeakerLevel Inputs: Yes
  • SpeakerLevel Outputs: No
  • Wireless: No

Wireless Connection

KEF Kube 8 MIE lets you make a wireless connection to your system with an optional KW1 Wireless Subwoofer Adapter Kit adapter. Wireless connection helps to minimize the cables running on your floor.

KEF Kube 8 MIE External Dimensions and Weight

KEF Kube 8 MIE has external dimensions of (Height x Width x Depth) 11.5 x 11.5 x 12.2 in (293 x 293 x 310 mm ).

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 8 MIE is approximately 908.3cm2 / 140.8inch2.

Find speakers that fit your shelf or alcove →

Weight

The KEF Kube 8 MIE weighs 9.40kg / 20.7lbs. 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 8 MIE's weight compares with the average, max and min weights in its class.

Weight
All Subwoofer Speakers
KEF Kube 8 MIE
Min
Average
Median
Weight
Subwoofer Speakers under $750
KEF Kube 8 MIE
Min
Average
Max

How does the KEF Kube 8 MIE compare to the KEF Kube 10 MIE?

One of the natural alternative to the KEF Kube 8 MIE is the Kube 10 MIE which is located one step higher in KEF's Powered Subwoofer selection.

Check the Detailed Comparison of KEF Kube 8 MIE vs Kube 10 MIE for more details.

Cabinet type and Materials

KEF Kube 8 MIE 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 8 MIE?

Here are the items that are included inside the box of Kube 8 MIE:
  • Kube 8 MIE subwoofer
  • Power cord
  • Euroblock speaker level connector
  • User manual and warranty information

Recommended Accessories

Here is a list of accessories that we think you may need for the KEF Kube 8 MIE.

  • Vibration Isolators: IsoAcoustics isolators are our favorite isolators but you may find more affordable options too.
  • Acoustic Panels and Treatments: Your room is as important as your stereo equipment so acoustic treatments goes a long way in improving the overall performance.

User's Manual

For more information about how to setup, use and maintain the KEF Kube 8 MIE, use the direct link below to download the official manual document:
Download User Manual for KEF Kube 8 MIE

Official Brochure

Here is a link to download the official brochure for the KEF Kube 8 MIE speaker:
Official Brochure for KEF Kube 8 MIE

Official Product Page

Official manufacturer's product page for the KEF Kube 8 MIE speaker can be found below:
Official Product Page for KEF Kube 8 MIE

Warranty

2 Years of parts warranty and 2 Years of labor warranty is generally provided by the manufacturer.

KEF Kube 8 MIE Detailed Specifications

General
BrandKEF
Full Model NameKEF Kube 8 MIE
TypePowered Subwoofer
Release Date2022
Frequency Response34-140 Hz
Enclosure TypeSealed
EnclosureAcoustic Suspension
Amplifier & Driver
Power (RMS)300 watts
Amplifier TypeClass D
Woofer8-inch Polypropylene

Controls & Connections
Low-pass Crossover40-140 Hz
Phase ControlYes
Room CorrectionYes
Built-in DSPYes
WirelessOptional
Line-level InputsStereo RCA/LFE
Speaker-level InputsYes
Speaker-level OutputsNo
Physical
Dimensions (HxWxD)11.5" x 11.5" x 12.2" (293 x 293 x 310 mm)
Weight9.4 kg (20.8 lbs)
Mounting BracketNo
Parts Warranty2 Years
Labor Warranty2 Years
KEF Kube 8 MIE Alternatives in Powered Subwoofer Speakers
Model Frequency Woofer Amp Power Dimensions
Polk Monitor XT12
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B&W DB4S
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Klipsch R-121SW
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B&W ASW610
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KEF KUBE 8b
Compare
34-140 Hz 8" 300 watts 11-9/16 x 11-5/8 x 13-5/16inch
KEF KUBE 10b
Compare
24-140 Hz 10" 300 watts 14-5/8 x 14 x 15-5/8inch
B&W ASW608
Compare
32-140 Hz 8" 200 watts 10-11/16 x 10-1/4 x 13-3/4inch
JBL Stage A120P
Compare
32-150 Hz 12" 250 watts 16-5/16 x 15-7/16 x 18-11/16inch
Klipsch SPL-120
Compare
24-125 Hz 12" 300 watts 17-11/16 x 14-3/4 x 21-1/4inch
Frequently Asked Questions about KEF Kube 8 MIE

How low can the KEF Kube 8 MIE go?

The KEF Kube 8 MIE has a frequency response of 34-140 Hz at -6dB. Its low-end extends to 34Hz.

How much power does the KEF Kube 8 MIE have?

The KEF Kube 8 MIE has a built-in 300-watt RMS Class D amplifier.

Is the KEF Kube 8 MIE sealed or ported?

The KEF Kube 8 MIE uses a Sealed enclosure. Sealed subwoofers trade a little output for tighter, more accurate bass and a smaller cabinet, which many listeners prefer for music.

What driver does the KEF Kube 8 MIE use?

The KEF Kube 8 MIE has a 8-inch Polypropylene driver.

Does the KEF Kube 8 MIE have app control or room correction?

Yes. The KEF Kube 8 MIE offers room correction, onboard DSP, an adjustable low-pass crossover (40-140 Hz) and phase control, letting you dial the sub into your room and blend it with your speakers.

How do you connect the KEF Kube 8 MIE?

The KEF Kube 8 MIE connects via line-level Stereo RCA/LFE and speaker-level Yes inputs, and supports a optional wireless connection.

How big and heavy is the KEF Kube 8 MIE?

The KEF Kube 8 MIE weighs 9.40kg / 20.7lbs and measures 11.5" x 11.5" x 12.2" (HxWxD).

How much does the KEF Kube 8 MIE cost?

The KEF Kube 8 MIE has a manufacturer's list price (MSRP) of $700.

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