In this review, we will be comparing Dynamo 1100X and DB4S, two Powered Subwoofer speakers from MartinLogan 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 MartinLogan 1100X and B&W DB4S first before getting into our more detailed comparison.
In the following sections, we will get into details in order to better understand how the MartinLogan 1100X and B&W DB4S 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 MartinLogan 1100Xand B&W DB4S have a single woofer setup however the MartinLogan 1100X's woofer is 12-inch whereas the B&W DB4S features a 10-inch woofer.
Frequency Response
Dynamo 1100X has a frequency range of 22-200 Hz whereas DB4S has a frequency range of 10-350 Hz. With a minimum frequency of 10Hz, the DB4S can go significantly deeper on the low side and provide stronger bass compared to the Dynamo 1100X'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
High Frequency
Subwoofer Speakers
Cabinet Type
Both MartinLogan 1100X and B&W DB4S 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 MartinLogan 1100X's and B&W DB4S's external dimensions. MartinLogan 1100X has external dimensions of 435.0 x 381.0 x 410.0mm ( 17-1/8 x 15 x 16-1/8inch) whereas B&W DB4S has external dimensions of 375.0 x 362.0 x 434.0mm ( 14-3/4 x 14-1/4 x 17-1/16inch) .
B&W DB4S is 19mm narrower and 60mm shorter than MartinLogan 1100X but it is also 24mm deeper.
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 MartinLogan 1100X is approximately 1562.1cm2 / 242.1inch2 and base area of the B&W DB4S is approximately 1571.1cm2 / 243.5inch2. The Dynamo 1100X requires 1% less surface area than the DB4S which gives it a small advantage 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 MartinLogan 1100X weighs 20.91kg / 46lbs and the B&W DB4S weighs 26.05kg / 57.3lbs. This makes the DB4S 25% heavier than the Dynamo 1100X.
Here is a comparison of how Dynamo 1100X and DB4S's weights compare with the average, max and min weights in Powered Subwoofer class.
Weight
All Subwoofer Speakers
What's in the Box of MartinLogan 1100X?
Here are the items that are included inside the box of Dynamo 1100X:
Powered subwooferGrille6.5-feet AC power cordUser-feets Manual
What's in the Box of B&W DB4S?
Here are the items that come with the DB4S:
Powered subwooferGrille6.5-feet AC power cord4 Decoupling feet4 Rubber feet4 Spike feet4 Lock-nutsCleaning clothQuickstart GuideBowers & Wilkins brochureWarranty InformationCleaning cloth instructions
 Woofer Size |
12 inches
vs
10 inches
|
Larger woofer |
 Base Surface Area |
1562cm2
vs
1571cm2
|
Takes less floor space |
 Price per pair* |
1500USD
vs
2199USD
|
costs less (*prices may change depending on the seller, location and time) |
 Wireless Operation |
Optional
vs
No
|
Connect your subwoofer to your system wireless |
| Low Frequency Response |
10 Hz
vs
22 Hz
|
Generates deeper bass |
 High Frequency Response |
350k Hz
vs
200k Hz
|
Generates higher frequency |
 Height |
375mm
vs
435mm
|
Easier to fit in smaller spaces |
| General |
MartinLogan Dynamo 1100X |
Bowers & Wilkins DB4S |
| Brand |
MartinLogan |
Bowers Wilkins |
| Speaker Type |
Powered Subwoofer |
Powered Subwoofer |
| Max Amplifier Output |
650 watts |
1000 watts |
| Frequency Response |
22-200 Hz |
10-350 Hz |
Amplifier |
|
|
| Watts RMS (Continuous) |
650-watt RMS |
0-watt RMS |
Drivers |
|
|
| Woofer Quantity |
1 |
1 |
| Woofer Size |
12" |
10" |
| Woofer Composition |
Polypropylene |
Aerofoil |
| Woofer Surround Material |
n/a |
Rubber |
| Tweeter Size |
- |
- |
| Aimable Tweeter |
No |
No |
| Midrange Driver |
No |
No |
| Firing Direction |
front and bottom |
front |
Physical Specs |
|
|
| Height |
435.0mm (17.1") |
375.0mm (14.8") |
| Width |
381.0mm (15") |
362.0mm (14.3") |
| Depth |
410.0mm (16.1") |
434.0mm (17.1") |
| Weight |
20.91kg (46lbs) |
26.05kg (57.3lbs) |
| Enclosure |
Acoustic Suspension |
Acoustic Suspension |
| Available Colors |
Satin Black |
n/a |
| Grille |
Yes |
Yes |
| Moisture Resistancy |
No |
No |
Connections |
|
|
Other |
|
|
| Parts Warranty |
3 Yrs w/ Registration |
2 Years |
| Labor Warranty |
3 Yrs w/ Registration |
2 Years |