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Polk Audio Polk Monitor XT12 vs Definitive Technology SuperCube 2000 Comparison
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Subwoofer to replace
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Polk Monitor XT12

Powered Subwoofer | 24-160 Hz

Polk Monitor XT12
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DT SuperCube 2000

Powered Subwoofer | 20-200 Hz

Definitive Technology SuperCube 2000
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Polk Monitor XT12 Polk Monitor XT12
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DT SuperCube 2000 DT SuperCube 2000
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Polk Monitor XT12
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DT SuperCube 2000
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Polk Monitor XT12 vs DT SuperCube 2000 Speaker Comparison

In this review, we will be comparing Monitor XT12 and SuperCube 2000, two Powered Subwoofer speakers from Polk Audio and Definitive Technology. 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 Polk Monitor XT12 and DT SuperCube 2000 first before getting into our more detailed comparison.

Polk Monitor XT12 Key Specs

  • 12" Bi-laminate paper Woofer
  • 24-160 Hz Frequency Response
  • 50 watts Max Amplifier Output
  • Weight:17.73kg
  • Dimensions (H x W x D): 418.0" x 16-1/16" x 19-1/16"( 418.0 x 408.0 x 485.0mm )

DT SuperCube 2000 Key Specs

  • 7.5" Not given Woofer
  • 20-200 Hz Frequency Response
  • 650 watts Max Amplifier Output
  • Weight:11.36kg
  • Dimensions (H x W x D): 275.0" x 10-1/4" x 12-5/8"( 275.0 x 261.0 x 321.0mm )

In the following sections, we will get into details in order to better understand how the Polk Monitor XT12 and DT SuperCube 2000 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 Polk Monitor XT12and DT SuperCube 2000 have a single woofer setup however the Polk Monitor XT12's woofer is 12-inch whereas the DT SuperCube 2000 features a 7.5-inch woofer.

Frequency Response

Monitor XT12 has a frequency range of 24-160 Hz whereas SuperCube 2000 has a frequency range of 20-200 Hz. With a minimum frequency of 20Hz, the SuperCube 2000 can go slightly deeper then the Monitor XT12's min frequency of 24Hz.

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

Polk Monitor XT12
DT SuperCube 2000
Min
Average
Max
High Frequency

Subwoofer Speakers

Polk Monitor XT12
DT SuperCube 2000
Min
Average
Max

Cabinet Type

The Polk Monitor XT12 has a Bass Reflex type cabinet. Bass Reflex type subwoofers (aka Ported, Vented or Reflex Port) have enclosures that uses a port, hole or vent cut into the cabinet. Ported designs are generally more efficient than the Sealed designs. On the other hand the DT SuperCube 2000 have Passive Radiator type enclosure. Passive Radiator type subwoofers sports a non-powered cone that moves in response to the main woofer to move air out in order to generate stronger bass in a smaller body compared to ported or sealed 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 Polk Monitor XT12's and DT SuperCube 2000's external dimensions. Polk Monitor XT12 has external dimensions of 418.0 x 408.0 x 485.0mm ( 16-7/16inch x 16-1/16inch x 19-1/16inch ) whereas DT SuperCube 2000 has external dimensions of 275.0 x 261.0 x 321.0mm ( 10-13/16 x 10-1/4 x 12-5/8inch) .

Polk Monitor XT12 is clearly the larger of the two speakers. Its body is 147mm wider, 143mm taller and 164mm deeper than DT SuperCube 2000.

Below you can see the front view size comparison of Polk Monitor XT12 and DT SuperCube 2000 in scale.

Polk Monitor XT12 vs DT SuperCube 2000 Size Comparison - Front View
Comparison image of Polk Monitor XT12 and DT SuperCube 2000 Size and External Dimensions

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 Polk Monitor XT12 is approximately 1978.8cm2 / 306.7inch2 and base area of the DT SuperCube 2000 is approximately 837.8cm2 / 129.9inch2. The Monitor XT12 requires 136% more surface area than the SuperCube 2000 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 Polk Monitor XT12 weighs 17.73kg / 39lbs and the DT SuperCube 2000 weighs 11.36kg / 25lbs. This makes the Monitor XT12 56% heavier than the SuperCube 2000.

Here is a comparison of how Monitor XT12 and SuperCube 2000's weights compare with the average, max and min weights in Powered Subwoofer class.

Weight
All Subwoofer Speakers
Polk Monitor XT12
DT SuperCube 2000
Min
Average
Max

What's in the Box of Polk Monitor XT12?

Here are the items that are included inside the box of Monitor XT12:
  • Black powered subwoofer
  • 6.5-feet AC power cord
  • Grille
  • Owners Manual
  • Online registration card
  • What's in the Box of DT SuperCube 2000?

    Here are the items that come with the SuperCube 2000:
  • 7.5-inch Powered subwoofer
  • 7-feet AC power cord
  • 4 Threaded rubber-feet
  • 4 Spike feet (hex-nut attached)
  • Owners Manual
  • Online Product Registration card

  • Reasons to choose Polk Monitor XT12 over Definitive Technology SuperCube 2000
    Woofer Size 12 inches vs 7.5 inches Larger woofer
    Reasons to choose Definitive Technology SuperCube 2000 over Polk Monitor XT12
    Low Frequency Response 20 Hz vs 24 Hz Generates deeper bass
    High Frequency Response 200k Hz vs 160k Hz Generates higher frequency
    Height 275mm vs 418mm Easier to fit in smaller spaces
    Base Surface Area 837cm2 vs 1978cm2 Takes less floor space
    Polk Monitor XT12 vs DT SuperCube 2000 Specs Table
    Detailed comparison of specifications
    General Polk Monitor XT12 Definitive Technology SuperCube 2000
    Brand Polk Audio Definitive Technology
    Speaker Type Powered Subwoofer Powered Subwoofer
    Max Amplifier Output 50 watts 650 watts
    Frequency Response 24-160 Hz 20-200 Hz
    Amplifier
    Watts RMS (Continuous) 50-watt RMS 650-watt RMS
    Drivers
    Woofer Quantity 1 1
    Woofer Size 12" 7.5"
    Woofer Composition Bi-laminate paper Not given
    Tweeter Size - -
    Aimable Tweeter No No
    Midrange Driver No No
    Firing Direction front front
    Physical Specs
    Height 418.0mm (16.5") 275.0mm (10.8")
    Width 408.0mm (16.1") 261.0mm (10.3")
    Depth 485.0mm (19.1") 321.0mm (12.6")
    Weight 17.73kg (39lbs) 11.36kg (25lbs)
    Enclosure Bass Reflex Passive Radiator
    Grille Yes n/a
    Moisture Resistancy No No
    Connections
    Other
    Parts Warranty 3 Years 3 Years
    Labor Warranty 3 Years 3 Years

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