In this review, we will be comparing SPL-150 and DB4S, two Powered Subwoofer speakers from Klipsch 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 Klipsch SPL-150 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 Klipsch SPL-150 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.
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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.Both Klipsch SPL-150and B&W DB4S have a single woofer setup however the Klipsch SPL-150's woofer is 15-inch whereas the B&W DB4S features a 10-inch woofer.
Frequency Response
SPL-150 has a frequency range of 18-125 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 SPL-150's min frequency of 18Hz.
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 Klipsch SPL-150 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 DB4S 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 Klipsch SPL-150's and B&W DB4S's external dimensions. Klipsch SPL-150 has external dimensions of 547.0 x 496.0 x 604.0mm ( 21-1/2 x 19-1/2 x 23-3/4inch) 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) .
Klipsch SPL-150 is clearly the larger of the two speakers. Its body is 134mm wider, 172mm taller and 170mm deeper than B&W DB4S.
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 Klipsch SPL-150 is approximately 2995.8cm2 / 464.3inch2 and base area of the B&W DB4S is approximately 1571.1cm2 / 243.5inch2. The SPL-150 requires 91% more surface area than the DB4S 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 Klipsch SPL-150 weighs 34.27kg / 75.4lbs and the B&W DB4S weighs 26.05kg / 57.3lbs. This makes the SPL-150 32% heavier than the DB4S.
Here is a comparison of how SPL-150 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 Klipsch SPL-150?
Here are the items that are included inside the box of SPL-150:
Powered subGrille6.5-feet AC power cordUser ManualImportant Safety InstructionsWarranty Information
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 |
15 inches
vs
10 inches
|
Larger woofer |
 Price per pair* |
1399USD
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
18 Hz
|
Generates deeper bass |
 High Frequency Response |
350k Hz
vs
125k Hz
|
Generates higher frequency |
 App-Based Control |
iOS,Android
vs
None
|
Control the speaker via an app |
 Height |
375mm
vs
547mm
|
Easier to fit in smaller spaces |
 Base Surface Area |
1571cm2 (362x434mm)
vs
2995cm2 (496x604mm)
|
Takes less floor space |
| General |
Klipsch SPL-150 |
Bowers & Wilkins DB4S |
| Brand |
Klipsch |
Bowers Wilkins |
| Speaker Type |
Powered Subwoofer |
Powered Subwoofer |
| Max Amplifier Output |
400 watts |
1000 watts |
| Frequency Response |
18-125 Hz |
10-350 Hz |
Amplifier |
|
|
| Watts RMS (Continuous) |
400-watt RMS |
0-watt RMS |
Drivers |
|
|
| Woofer Quantity |
1 |
1 |
| Woofer Size |
15" |
10" |
| Woofer Composition |
Cerametallic |
Aerofoil |
| Woofer Surround Material |
n/a |
Rubber |
| Tweeter Size |
- |
- |
| Aimable Tweeter |
No |
No |
| Midrange Driver |
No |
No |
| Firing Direction |
front |
front |
Physical Specs |
|
|
| Height |
547.0mm (21.5") |
375.0mm (14.8") |
| Width |
496.0mm (19.5") |
362.0mm (14.3") |
| Depth |
604.0mm (23.8") |
434.0mm (17.1") |
| Weight |
34.27kg (75.4lbs) |
26.05kg (57.3lbs) |
| Enclosure |
Bass Reflex |
Acoustic Suspension |
| Grille |
Yes |
Yes |
| Moisture Resistancy |
No |
No |
Connections |
|
|
Other |
|
|
| Parts Warranty |
2 Years |
2 Years |
| Labor Warranty |
2 Years |
2 Years |