In this review, we will be comparing SW-15 and A120P, two Powered Subwoofer speakers from Wharfedale and JBL. 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 Wharfedale SW-15 and JBL Stage A120P first before getting into our more detailed comparison.
In the following sections, we will get into details in order to better understand how the Wharfedale SW-15 and JBL Stage A120P 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 Wharfedale SW-15and JBL Stage A120P have a single woofer setup however the Wharfedale SW-15's woofer is 15-inch whereas the JBL Stage A120P features a 12-inch woofer.
Frequency Response
SW-15 has a frequency range of 30-120 Hz whereas A120P has a frequency range of 32-150 Hz. With a minimum frequency of 30Hz, the SW-15 can go slightly deeper then the A120P's min frequency of 32Hz.
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 Wharfedale SW-15 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 JBL Stage A120P have Bass reflex type enclosure.
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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 Wharfedale SW-15's and JBL Stage A120P's external dimensions. Wharfedale SW-15 has external dimensions of 570.0 x 493.0 x 615.0mm ( 22-7/16inch x 19-3/8inch x 24-3/16inch ) whereas JBL Stage A120P has external dimensions of 415.0 x 393.0 x 475.0mm ( 16-5/16 x 15-7/16 x 18-11/16inch) .
Wharfedale SW-15 is clearly the larger of the two speakers. Its body is 100mm wider, 155mm taller and 140mm deeper than JBL Stage A120P.
Below you can see the front view size comparison of Wharfedale SW-15 and JBL Stage A120P in scale.
Comparison image of Wharfedale SW-15 and JBL Stage A120P 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 Wharfedale SW-15 is approximately 3032.0cm2 / 470.0inch2 and base area of the JBL Stage A120P is approximately 1866.8cm2 / 289.4inch2. The SW-15 requires 62% more surface area than the A120P 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 Wharfedale SW-15 weighs 31.57kg / 69.5lbs and the JBL Stage A120P weighs 18.68kg / 41.1lbs. This makes the SW-15 69% heavier than the A120P.
Here is a comparison of how SW-15 and A120P's weights compare with the average, max and min weights in Powered Subwoofer class.
Weight
All Subwoofer Speakers
What's in the Box of Wharfedale SW-15?
Here are the items that are included inside the box of SW-15:
Powered subwooferGrille6.5-feet AC power cordUser-feets Manual
What's in the Box of JBL Stage A120P?
Here are the items that come with the A120P:
Powered subwooferGrille6-feet AC power cord4 Spike feetOwners ManualWarranty CardImportant Safety Instructions
 Woofer Size |
15 inches
vs
12 inches
|
Larger woofer |
| Low Frequency Response |
30 Hz
vs
32 Hz
|
Generates deeper bass |
 High Frequency Response |
150k Hz
vs
120k Hz
|
Generates higher frequency |
 Height |
415mm
vs
570mm
|
Easier to fit in smaller spaces |
 Base Surface Area |
1866cm2 (393x475mm)
vs
3032cm2 (493x615mm)
|
Takes less floor space |
 Price per pair* |
300USD
vs
1199USD
|
costs less (*prices may change depending on the seller, location and time) |
| General |
Wharfedale SW-15 |
JBL Stage A120P |
| Brand |
Wharfedale |
JBL |
| Speaker Type |
Powered Subwoofer |
Powered Subwoofer |
| Max Amplifier Output |
400 watts |
250 watts |
| Frequency Response |
30-120 Hz |
32-150 Hz |
Amplifier |
|
|
| Watts RMS (Continuous) |
400-watt RMS |
250-watt RMS |
| Watts Peak (Max) |
n/a |
500-watt RMS |
Drivers |
|
|
| Woofer Quantity |
1 |
1 |
| Woofer Size |
15" |
12" |
| Woofer Composition |
Paper |
Polycellulose |
| Tweeter Size |
- |
- |
| Aimable Tweeter |
No |
No |
| Midrange Driver |
No |
No |
| Firing Direction |
front |
front |
Physical Specs |
|
|
| Height |
570.0mm (22.4") |
415.0mm (16.3") |
| Width |
493.0mm (19.4") |
393.0mm (15.5") |
| Depth |
615.0mm (24.2") |
475.0mm (18.7") |
| Weight |
31.57kg (69.5lbs) |
18.68kg (41.1lbs) |
| Enclosure |
Bass Reflex |
Bass reflex |
| Grille |
Yes |
Yes |
| Moisture Resistancy |
No |
No |
Connections |
|
|
Other |
|
|
| Parts Warranty |
3 Years |
1 Year |
| Labor Warranty |
3 Years |
1 Year |