In this review, we will be comparing Silver W-12 and A120P, two Powered Subwoofer speakers from Monitor Audio 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 Monitor Audio Silver W-12 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 Monitor Audio Silver W-12 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.Monitor Audio Silver W-12and JBL Stage A120P have the same driver set up: Both subwoofers have 1 x 12" drivers.
Frequency Response
Silver W-12 has a frequency range of 20-120 Hz whereas A120P has a frequency range of 32-150 Hz. With a minimum frequency of 20Hz, the Silver W-12 can go significantly deeper on the low side and provide stronger bass compared to 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
Monitor Audio Silver W-12
High Frequency
Subwoofer Speakers
Monitor Audio Silver W-12
Cabinet Type
The Monitor Audio Silver W-12 has a Acoustic Suspension type cabinet. 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. On the other hand the JBL Stage A120P have Bass reflex type enclosure.
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 Monitor Audio Silver W-12's and JBL Stage A120P's external dimensions. Monitor Audio Silver W-12 has external dimensions of 355.0 x 342.0 x 445.0mm ( 13-15/16 x 13-7/16 x 17-1/2inch) 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) .
JBL Stage A120P is clearly the larger of the two speakers. Its body is 51mm wider, 60mm taller and 30mm deeper than Monitor Audio Silver W-12.
Below you can see the front view size comparison of Monitor Audio Silver W-12 and JBL Stage A120P in scale.
Comparison image of Monitor Audio Silver W-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 Monitor Audio Silver W-12 is approximately 1521.9cm2 / 235.9inch2 and base area of the JBL Stage A120P is approximately 1866.8cm2 / 289.4inch2. The Silver W-12 requires 18% less surface area than the A120P 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 Monitor Audio Silver W-12 weighs 20.14kg / 44.3lbs and the JBL Stage A120P weighs 18.68kg / 41.1lbs. This makes the Silver W-12 8% heavier than the A120P.
Here is a comparison of how Silver W-12 and A120P's weights compare with the average, max and min weights in Powered Subwoofer class.
Weight
All Subwoofer Speakers
Monitor Audio Silver W-12
What's in the Box of Monitor Audio Silver W-12?
Here are the items that are included inside the box of Silver W-12:
Powered sub6-feet AC power cordGrilleAuto setup mic (w/ attached 19.5-feet cable)10.75-feet Mono minijack cable4 FeetOwners ManualImportant Safety Instructions
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
 Low Frequency Response |
20 Hz
vs
32 Hz
|
Generates deeper bass |
 Height |
355mm
vs
415mm
|
Easier to fit in smaller spaces |
 Base Surface Area |
1521cm2 (342x445mm)
vs
1866cm2 (393x475mm)
|
Takes less floor space |
 High Frequency Response |
150k Hz
vs
120k Hz
|
Generates higher frequency |
 Price per pair* |
300USD
vs
2100USD
|
costs less (*prices may change depending on the seller, location and time) |
| General |
Monitor Audio Silver W-12 |
JBL Stage A120P |
| Brand |
Monitor Audio |
JBL |
| Speaker Type |
Powered Subwoofer |
Powered Subwoofer |
| Max Amplifier Output |
500 watts |
250 watts |
| Frequency Response |
20-120 Hz |
32-150 Hz |
Amplifier |
|
|
| Watts RMS (Continuous) |
500-watt RMS |
250-watt RMS |
| Watts Peak (Max) |
n/a |
500-watt RMS |
Drivers |
|
|
| Woofer Quantity |
1 |
1 |
| Woofer Size |
12" |
12" |
| Woofer Composition |
C-CAM |
Polycellulose |
| Tweeter Size |
- |
- |
| Aimable Tweeter |
No |
No |
| Midrange Driver |
No |
No |
| Firing Direction |
front |
front |
Physical Specs |
|
|
| Height |
355.0mm (14") |
415.0mm (16.3") |
| Width |
342.0mm (13.5") |
393.0mm (15.5") |
| Depth |
445.0mm (17.5") |
475.0mm (18.7") |
| Weight |
20.14kg (44.3lbs) |
18.68kg (41.1lbs) |
| Enclosure |
Acoustic Suspension |
Bass reflex |
| Grille |
Yes |
Yes |
| Moisture Resistancy |
No |
No |
Connections |
|
|
Other |
|
|
| Parts Warranty |
2 Years |
1 Year |
| Labor Warranty |
2 Years |
1 Year |