In this review, we will be comparing SW-12 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-12 and JBL Stage A120P first before getting into our more detailed comparison.
The sections below take each area in turn: driver and amplifier, frequency response, physical size and connectivity.
**This post contains affiliate links, and we will be compensated if you make a purchase after clicking through our 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.Wharfedale SW-12and JBL Stage A120P have the same driver set up: Both subwoofers have 1 x 12" drivers.
Frequency Response
SW-12 has a frequency range of 35-120 Hz whereas A120P has a frequency range of 32-150 Hz. With a minimum frequency of 32Hz, the A120P can go slightly deeper then the SW-12's min frequency of 35Hz.
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-12 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.
Physical Specs
The size of a speaker can sometimes be 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-12's and JBL Stage A120P's external dimensions. Wharfedale SW-12 has external dimensions of 480.0 x 402.0 x 512.0mm (18-7/8inch x 15-13/16inch x 20-1/8inch) 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-12 is clearly the larger of the two speakers. Its body is 9mm wider, 65mm taller and 37mm deeper than JBL Stage A120P.
Below you can see the front view size comparison of Wharfedale SW-12 and JBL Stage A120P in scale.
Comparison image of Wharfedale SW-12 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-12 is approximately 2058.2cm2 / 319.0inch2 and base area of the JBL Stage A120P is approximately 1866.8cm2 / 289.4inch2. The SW-12 requires 10% 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-12 weighs 21.54kg / 47.4lbs and the JBL Stage A120P weighs 18.68kg / 41.1lbs. This makes the SW-12 15% heavier than the A120P.
Here is a comparison of how SW-12 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-12?
Here are the items that are included inside the box of SW-12:
- Powered subwoofer
- Grille
- 6.5-feet AC power cord
- User-feets Manual
What's in the Box of JBL Stage A120P?
Here are the items that come with the A120P:
- Powered subwoofer
- Grille
- 6-feet AC power cord
- 4 Spike feet
- Owners Manual
- Warranty Card
- Important Safety Instructions
 Low Frequency Response |
32 Hz
vs
35 Hz
|
Generates deeper bass |
 High Frequency Response |
150k Hz
vs
120k Hz
|
Generates higher frequency |
 Height |
415mm
vs
480mm
|
Easier to fit in smaller spaces |
 Base Surface Area |
1866cm2
vs
2058cm2
|
Takes less floor space |
 Price per pair* |
300USD
vs
999USD
|
costs less (*prices may change depending on the seller, location and time) |
| General |
Wharfedale SW-12 |
JBL Stage A120P |
| Brand |
Wharfedale |
JBL |
| Speaker Type |
Powered Subwoofer |
Powered Subwoofer |
| Max Amplifier Output |
300 watts |
250 watts |
| Frequency Response |
35-120 Hz |
32-150 Hz |
Amplifier |
|
|
| Watts RMS (Continuous) |
300-watt RMS |
250-watt RMS |
| Watts Peak (Max) |
n/a |
500-watt RMS |
Drivers |
|
|
| Woofer Quantity |
1 |
1 |
| Woofer Size |
12" |
12" |
| Woofer Composition |
Paper |
Polycellulose |
| Tweeter Size |
- |
- |
| Aimable Tweeter |
No |
No |
| Midrange Driver |
No |
No |
| Firing Direction |
front |
front |
Physical Specs |
|
|
| Height |
480.0mm (18.9") |
415.0mm (16.3") |
| Width |
402.0mm (15.8") |
393.0mm (15.5") |
| Depth |
512.0mm (20.2") |
475.0mm (18.7") |
| Weight |
21.54kg (47.4lbs) |
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 |