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KEF Kube 15 MIE vs KEF Kube 12 MIE Comparison
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KEF Kube 15 MIE

Powered Subwoofer | 20-140 Hz

KEF Kube 15 MIE
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KEF Kube 12 MIE

Powered Subwoofer | 22-140 Hz

KEF Kube 12 MIE
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KEF Kube 15 MIE KEF Kube 15 MIE
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KEF Kube 12 MIE KEF Kube 12 MIE
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KEF Kube 15 MIE
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KEF Kube 12 MIE
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KEF Kube 15 MIE vs KEF Kube 12 MIE Speaker Comparison

In this review, we will be comparing Kube 15 MIE and Kube 12 MIE, two Powered Subwoofer speakers by KEF. Being Powered subwoofers, they both have built-in amplifiers so you don't need an external power amp or an integrated amp to power them. Let's have a brief look at the main features of KEF Kube 15 MIE and KEF Kube 12 MIE first before getting into our more detailed comparison.

KEF Kube 15 MIE Key Specs

  • 15" Polypropylene Woofer
  • 20-140 Hz Frequency Response
  • 300 watts Max Amplifier Output
  • Weight:27.50kg
  • Dimensions (H x W x D): 519.0" x 19.7" x 20.3"( 519 x 500 x 515 mm )

KEF Kube 12 MIE Key Specs

  • 12" Polypropylene Woofer
  • 22-140 Hz Frequency Response
  • 300 watts Max Amplifier Output
  • Weight:18.60kg
  • Dimensions (H x W x D): 410.0" x 15.5" x 16.1"( 410 x 393 x 410 mm )

Kube 15 MIE and Kube 12 MIE are members of KEF's KUBE MIE series of subwoofers. Below you can find other subs from this series.

KEF KUBE MIE Series Subwoofers History
Model Frequency Woofer Amp Power
KEF Kube 8 MIE
  
34-140k Hz 8" 300 watts
KEF Kube 12 MIE
22-140k Hz 12" 300 watts
KEF Kube 15 MIE
20-140k Hz 15" 300 watts
KEF Kube 10 MIE
  
20-140k Hz 10" 300 watts

In the following sections, we will get into details in order to better understand how the KEF Kube 15 MIE and KEF Kube 12 MIE compare and hopefully end up with enough arguments to decide which one of these subwoofers is the better choice for you.


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

Drivers

The efficiency of a subwoofer is directly proportional to the total radiating are squared hence the woofer quantity and diameter.Both KEF Kube 15 MIEand KEF Kube 12 MIE have a single woofer setup however the KEF Kube 15 MIE's woofer is 15-inch whereas the KEF Kube 12 MIE features a 12-inch woofer.

Frequency Response

Kube 15 MIE has a frequency range of 20-140 Hz whereas Kube 12 MIE has a frequency range of 22-140 Hz. With a minimum frequency of 20Hz, the Kube 15 MIE can go slightly deeper then the Kube 12 MIE's min frequency of 22Hz.

Below graphs depict how these two speakers compare with the max, min and average values of the Min and Max Frequencies of other speakers in the Subwoofer class in our database.

Low Frequency

Subwoofer Speakers

KEF Kube 15 MIE
KEF Kube 12 MIE
Min
Average
Max
High Frequency

Subwoofer Speakers

KEF Kube 15 MIE
KEF Kube 12 MIE
Min
Average
Max

Cabinet Type

Both KEF Kube 15 MIE and KEF Kube 12 MIE have Acoustic Suspension type cabinets. Acoustic Suspension aka Sealed type subwoofers have enclosures that are sealed hence no ports or holes exists on the cabinet. Sealed designs helps to provide more accurate and tight bass responses compared to ported designs.

Physical Specs

Size of a speaker can sometimes become an important decision factor due to space constraints or in some cases purely for esthetic reasons. In this section, we are going to compare KEF Kube 15 MIE's and KEF Kube 12 MIE's external dimensions. KEF Kube 15 MIE has external dimensions of 519 x 500 x 515 mm ( 20.4 x 19.7 x 20.3 in) whereas KEF Kube 12 MIE has external dimensions of 410 x 393 x 410 mm ( 16.1 x 15.5 x 16.1 in) .

KEF Kube 15 MIE is clearly the larger of the two speakers. Its body is 107mm wider, 109mm taller and 105mm deeper than KEF Kube 12 MIE.

Base Surface Area Comparison
Base surface area of a loudspeaker may become a determining factor when the space in your room or desk is limited. The base surface area of the KEF Kube 15 MIE is approximately 2575.0cm2 / 399.1inch2 and base area of the KEF Kube 12 MIE is approximately 1611.3cm2 / 249.8inch2. The Kube 15 MIE requires 60% more surface area than the Kube 12 MIE which gives it a small disadvantage on placement in tight spaces.

Weight Comparison

The weight of a subwoofer may become an important factor if you need to move and reposition the unit often to find the optimal positioning, also known as 'Subwoofer Crawling'. The KEF Kube 15 MIE weighs 27.50kg / 60.5lbs and the KEF Kube 12 MIE weighs 18.60kg / 40.9lbs. This makes the Kube 15 MIE 48% heavier than the Kube 12 MIE.

Here is a comparison of how Kube 15 MIE and Kube 12 MIE's weights compare with the average, max and min weights in Powered Subwoofer class.

Weight
All Subwoofer Speakers
KEF Kube 15 MIE
KEF Kube 12 MIE
Min
Average
Max

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
  • What's in the Box of KEF Kube 12 MIE?

    Here are the items that come with the Kube 12 MIE:
  • Kube 12 MIE subwoofer
  • Power cord
  • Euroblock speaker level connector
  • User manual and warranty information

  • Reasons to choose KEF Kube 15 MIE over KEF Kube 12 MIE
    Woofer Size 15 inches vs 12 inches Larger woofer
    Low Frequency Response 20 Hz vs 22 Hz Generates deeper bass
    Reasons to choose KEF Kube 12 MIE over KEF Kube 15 MIE
    Height 410mm vs 519mm Easier to fit in smaller spaces
    Base Surface Area 1611cm2 vs 2575cm2 Takes less floor space
    Price per pair* 999USD vs 1399USD costs less (*prices may change depending on the seller, location and time)
    KEF Kube 15 MIE vs KEF Kube 12 MIE Specs Table
    Detailed comparison of specifications
    General KEF Kube 15 MIE KEF Kube 12 MIE
    Brand KEF KEF
    Speaker Type Powered Subwoofer Powered Subwoofer
    Max Amplifier Output 300 watts 300 watts
    Frequency Response 20-140 Hz 22-140 Hz
    Amplifier
    Watts RMS (Continuous) 300-watt RMS 300-watt RMS
    Drivers
    Woofer Quantity 1 1
    Woofer Size 15" 12"
    Woofer Composition Polypropylene Polypropylene
    Tweeter Size - -
    Aimable Tweeter No No
    Midrange Driver No No
    Crossover Frequency 40-140 Hz 40-140 Hz
    Physical Specs
    Height 519.0mm (20.4") 410.0mm (16.1")
    Width 500.0mm (19.7") 393.0mm (15.5")
    Depth 515.0mm (20.3") 410.0mm (16.1")
    Weight 27.50kg (60.5lbs) 18.60kg (40.9lbs)
    Enclosure Acoustic Suspension Acoustic Suspension
    Moisture Resistancy No No
    Connections
    Other
    Parts Warranty 2 Years 2 Years
    Labor Warranty 2 Years 2 Years

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