In this review, we will be comparing Monitor XT12 and DB3D, two Powered Subwoofer speakers from Polk Audio and Bowers Wilkins. 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 B&W DB3D first before getting into our more detailed comparison.
In the following sections, we will get into details in order to better understand how the Polk Monitor XT12 and B&W DB3D compare and hopefully end up with enough arguments to decide which one of these subwoofers is the better choice for you.
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Drivers
The efficiency of a subwoofer is directly proportional to the total radiating are squared hence the woofer quantity and diameter.Polk Monitor XT12 and B&W DB3D have a totally different setup: the Polk Monitor XT12 features 1 x 12-inch drivers whereas the DB3D features 2 x 8-inch drivers.
Frequency Response
Monitor XT12 has a frequency range of 24-160 Hz whereas DB3D has a frequency range of 10-350Hz. With a minimum frequency of 10Hz, the DB3D can go significantly deeper on the low side and provide stronger bass compared to 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
High Frequency
Subwoofer Speakers
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 B&W DB3D have Acoustic Suspension type enclosure. 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 Polk Monitor XT12's and B&W DB3D'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 B&W DB3D has external dimensions of ( ) .
Polk Monitor XT12 is clearly the larger of the two speakers. Its body is 408mm wider, 418mm taller and 485mm deeper than B&W DB3D.
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 B&W DB3D weighs 25.05kg / 55.1lbs. This makes the DB3D 41% heavier than the Monitor XT12.
Here is a comparison of how Monitor XT12 and DB3D's weights compare with the average, max and min weights in Powered Subwoofer class.
Weight
All Subwoofer Speakers
What's in the Box of Polk Monitor XT12?
Here are the items that are included inside the box of Monitor XT12:
Black powered subwoofer6.5-feet AC power cordGrilleOwners ManualOnline registration card
What's in the Box of B&W DB3D?
Here are the items that come with the DB3D:
Powered subwoofer2 Grilles6.5-feet AC power cord4 Decoupling feet4 Rubber feet4 Spike feet4 Lock-nutsCleaning clothQuickstart GuideBowers & Wilkins brochureWarranty InformationCleaning cloth instructions
 Woofer Size |
12 inches
vs
8 inches
|
Larger woofer |
 Price per pair* |
399USD
vs
3499USD
|
costs less (*prices may change depending on the seller, location and time) |
| Number of Woofers |
2
vs
1
|
More woofers |
| Low Frequency Response |
10 Hz
vs
24 Hz
|
Generates deeper bass |
 High Frequency Response |
350k Hz
vs
160k Hz
|
Generates higher frequency |
 App-Based Control |
iOS,Android
vs
None
|
Control the speaker via an app |
 Height |
0mm
vs
418mm
|
Easier to fit in smaller spaces |
 Base Surface Area |
0cm2 (0x0mm)
vs
1978cm2 (408x485mm)
|
Takes less floor space |
| General |
Polk Monitor XT12 |
Bowers & Wilkins DB3D |
| Brand |
Polk Audio |
Bowers Wilkins |
| Speaker Type |
Powered Subwoofer |
Powered Subwoofer |
| Max Amplifier Output |
50 watts |
1000 watts |
| Frequency Response |
24-160 Hz |
10-350Hz |
Amplifier |
|
|
| Watts RMS (Continuous) |
50-watt RMS |
1000-watt RMS |
Drivers |
|
|
| Woofer Quantity |
1 |
2 |
| Woofer Size |
12" |
8" |
| Woofer Composition |
Bi-laminate paper |
|
| Woofer Surround Material |
n/a |
Rubber |
| Tweeter Size |
- |
- |
| Aimable Tweeter |
No |
No |
| Midrange Driver |
No |
No |
| Firing Direction |
front |
n/a |
Physical Specs |
|
|
| Height |
418.0mm (16.5") |
mm (0") |
| Width |
408.0mm (16.1") |
mm (0") |
| Depth |
485.0mm (19.1") |
mm (0") |
| Weight |
17.73kg (39lbs) |
25.05kg (55.1lbs) |
| Enclosure |
Bass Reflex |
Acoustic Suspension |
| Grille |
Yes |
Yes |
| Moisture Resistancy |
No |
No |
Connections |
|
|
Other |
|
|
| Parts Warranty |
3 Years |
2 Years |
| Labor Warranty |
3 Years |
2 Years |