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KEF Kube 15 MIE Subwoofer Review
KEF Kube 15 MIE - Image 1

Main Features

  • 15" Polypropylene Woofer
  • 300 watts RMS Output
  • 20-140 Hz Frequency Response
  • Built-in DSP with Room Correction
  • Weight: 60.60 lbs / 27.50kg
  • Dimensions (H x W x D): 20.4" x 19.7" x 20.3"
MSRP: $1,399 (list price)
Check price atAmazon›

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KEF Kube 15 MIE Subwoofer Review
KEF Kube 15 MIE KEF Kube 15 MIE
Check price atAmazon›

Kube 15 MIE is a Sealed type Powered Subwoofer by KEF with a frequency range of 20-140 Hz. It was released in 2022. It features 1 x 15" Polypropylene Woofer, and powered by a Class D 300 watts amplifier.

KEF Kube 15 MIE  Lifestyle
KEF Kube 15 MIE Lifestyle

Kube 15 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
Compare
34-140k Hz 8" 300 watts 9.4kg
KEF Kube 10 MIE
Compare
20-140k Hz 10" 300 watts 15.4kg
KEF Kube 12 MIE
Compare
22-140k Hz 12" 300 watts 18.6kg
KEF Kube 15 MIE
20-140k Hz 15" 300 watts 27.5kg


**This post contains affiliate links, and we will be compensated if you make a purchase after clicking through our links. As an Amazon Associate I earn from qualifying purchases.

Frequency Response

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

KEF Kube 15 MIE has a Frequency response range of 20-140 Hz. Thanks to its 1 x 15-inch driver and 300 watts RMS amplifier, the Kube 15 MIE can go as low as 20 Hz which means you can get a Full range (20Hz-20kHz) listening experience when coupled with almost any loudspeaker in the market.

Here we have a comparison of how Kube 15 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 15 MIE
Min
Average
Max
High Frequency
Subwoofer Speakers
KEF Kube 15 MIE
Min
Average
Max

Among all subwoofers in our database with a max MSRP price of 1500$, these are the 5 Powered Subwoofer models that can reach deeper bass levels than the KEF Kube 15 MIE's 20Hz:

  • GoldenEar SuperSub X with Low Frequency of 12 Hz (Compare w/ Kube 15 MIE)
  • GoldenEar ForceField 40 with Low Frequency of 14 Hz (Compare w/ Kube 15 MIE)
  • GoldenEar ForceField 4 with Low Frequency of 14 Hz (Compare w/ Kube 15 MIE)
  • SVS PB-2000 Pro with Low Frequency of 16 Hz (Compare w/ Kube 15 MIE)
  • SVS PC-2000 Pro with Low Frequency of 16 Hz (Compare w/ Kube 15 MIE)

KEF Kube 15 MIE Back View
KEF Kube 15 MIE Back View

Inputs and Outputs

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

Wireless Connection

KEF Kube 15 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 15 MIE External Dimensions and Weight

KEF Kube 15 MIE has external dimensions of (Height x Width x Depth) 20.4 x 19.7 x 20.3 in (519 x 500 x 515 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 15 MIE is approximately 2575.0cm2 / 399.1inch2.

Find speakers that fit your shelf or alcove →

Weight

The KEF Kube 15 MIE weighs 27.50kg / 60.5lbs. 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 15 MIE's weight compares with the average, max and min weights in its class.

Weight
All Subwoofer Speakers
KEF Kube 15 MIE
Min
Average
Median
Weight
Subwoofer Speakers under $1500
KEF Kube 15 MIE
Min
Average
Max

Cabinet type and Materials

KEF Kube 15 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 15 MIE?

Here are the items that are included inside the box of Kube 15 MIE:
  • Kube 15 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 15 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 15 MIE, use the direct link below to download the official manual document:
Download User Manual for KEF Kube 15 MIE

Official Brochure

Here is a link to download the official brochure for the KEF Kube 15 MIE speaker:
Official Brochure for KEF Kube 15 MIE

Official Product Page

Official manufacturer's product page for the KEF Kube 15 MIE speaker can be found below:
Official Product Page for KEF Kube 15 MIE

Warranty

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

KEF Kube 15 MIE Detailed Specifications

General
BrandKEF
Full Model NameKEF Kube 15 MIE
TypePowered Subwoofer
Release Date2022
Frequency Response20-140 Hz
Enclosure TypeSealed
EnclosureAcoustic Suspension
Amplifier & Driver
Power (RMS)300 watts
Amplifier TypeClass D
Woofer15-inch Polypropylene

Controls & Connections
Phase ControlYes
Room CorrectionYes
Built-in DSPYes
WirelessOptional
Line-level InputsStereo RCA/LFE
Speaker-level InputsYes
Speaker-level OutputsNo
Physical
Dimensions (HxWxD)20.4" x 19.7" x 20.3" (519 x 500 x 515 mm)
Weight27.5 kg (60.6 lbs)
Mounting BracketNo
Parts Warranty2 Years
Labor Warranty2 Years
KEF Kube 15 MIE Alternatives in Powered Subwoofer Speakers
Model Frequency Woofer Amp Power Dimensions
Polk Monitor XT12
Compare
24-160k Hz 12" 50 watts 16-7/16inch x 16-1/16inch x 19-1/16inch"
SVS SB-1000 Pro
Compare
20-270k Hz 12" 325 watts 13-1/2inch x 13inch x 15-13/16inch"
B&W DB4S
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10-350k Hz 10" 1000 watts 14-3/4 x 14-1/4 x 17-1/16inch"
Klipsch R-121SW
Compare
28-120k Hz 12" 200 watts 16-5/8inch x 16inch x 20-15/16inch"
Klipsch R-101SW
Compare
30-160k Hz 10" 150 watts 14-9/16inch x 14-1/16inch x 20-13/16inch"
Klipsch RP-1200SW
Compare
17-138k Hz 12" 400 watts 18-15/16inch x 17inch x 25-15/16inch"
KEF KC62
Compare
11-200k Hz 6.5" 1000 watts 9-5/8inch x 10-1/8inch x 11-1/16inch"
Klipsch R-100SW
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32-120k Hz 10" 150 watts 14-5/8 x 12-9/16 x 18-1/16inch"
Wharfedale SW-15
Compare
30-120k Hz 15" 400 watts 22-7/16inch x 19-3/8inch x 24-3/16inch"
Klipsch SPL-100
Compare
27-125k Hz 10" 200 watts 16-7/16 x 14-1/16 x 18-13/16inch"
B&W ASW610
Compare
27-140k Hz 10" 200 watts 12-5/8 x 12-1/4 x 15-1/2inch"
KEF KUBE 8b
Compare
34-140k Hz 8" 300 watts 11-9/16 x 11-5/8 x 13-5/16inch"
KEF KUBE 10b
Compare
24-140k Hz 10" 300 watts 14-5/8 x 14 x 15-5/8inch"
B&W ASW608
Compare
32-140k Hz 8" 200 watts 10-11/16 x 10-1/4 x 13-3/4inch"
JBL Stage A120P
Compare
32-150k Hz 12" 250 watts 16-5/16 x 15-7/16 x 18-11/16inch"
Klipsch SPL-120
Compare
24-125k Hz 12" 300 watts 17-11/16 x 14-3/4 x 21-1/4inch"
Frequently Asked Questions about KEF Kube 15 MIE

How low can the KEF Kube 15 MIE go?

The KEF Kube 15 MIE has a frequency response of 20-140 Hz. Reaching down to 20Hz, it covers the full range of audible low bass.

How much power does the KEF Kube 15 MIE have?

The KEF Kube 15 MIE has a built-in 300-watt RMS Class D amplifier.

Is the KEF Kube 15 MIE sealed or ported?

The KEF Kube 15 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 15 MIE use?

The KEF Kube 15 MIE has a 15-inch Polypropylene driver.

Does the KEF Kube 15 MIE have app control or room correction?

Yes. The KEF Kube 15 MIE offers room correction, onboard DSP and phase control, letting you dial the sub into your room and blend it with your speakers.

How do you connect the KEF Kube 15 MIE?

The KEF Kube 15 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 15 MIE?

The KEF Kube 15 MIE weighs 27.50kg / 60.5lbs and measures 20.4" x 19.7" x 20.3" (HxWxD).

How much does the KEF Kube 15 MIE cost?

The KEF Kube 15 MIE has a manufacturer's list price (MSRP) of $1,399.

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