In this review, we will be comparing ForceField 30 and A120P, two Powered Subwoofer speakers from GoldenEar 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 GoldenEar ForceField 30 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 GoldenEar ForceField 30 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 GoldenEar ForceField 30and JBL Stage A120P have a single woofer setup however the GoldenEar ForceField 30's woofer is 8-inch whereas the JBL Stage A120P features a 12-inch woofer.
Frequency Response
ForceField 30 has a frequency range of 18-250 Hz whereas A120P has a frequency range of 32-150 Hz. With a minimum frequency of 18Hz, the ForceField 30 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
High Frequency
Subwoofer Speakers
Cabinet Type
The GoldenEar ForceField 30 has a Passive Radiator type cabinet. Passive Radiator type subwoofers sports a non-powered cone that moves in response to the main woofer to move air out in order to generate stronger bass in a smaller body compared to ported or sealed 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 GoldenEar ForceField 30's and JBL Stage A120P's external dimensions. GoldenEar ForceField 30 has external dimensions of 324.0 x 291.0 x 421.0mm ( 12-3/4inch x 11-7/16inch x 16-9/16inch ) 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) .
JBL Stage A120P is clearly the larger of the two speakers. Its body is 102mm wider, 91mm taller and 54mm deeper than GoldenEar ForceField 30.
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 GoldenEar ForceField 30 is approximately 1225.1cm2 / 189.9inch2 and base area of the JBL Stage A120P is approximately 1866.8cm2 / 289.4inch2. The ForceField 30 requires 34% 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 GoldenEar ForceField 30 weighs 14.32kg / 31.5lbs and the JBL Stage A120P weighs 18.68kg / 41.1lbs. This makes the A120P 30% heavier than the ForceField 30.
Here is a comparison of how ForceField 30 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 GoldenEar ForceField 30?
Here are the items that are included inside the box of ForceField 30:
Powered subwoofer10-feet AC power cordQuick Start GuideOwners 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
 Low Frequency Response |
18 Hz
vs
32 Hz
|
Generates deeper bass |
 High Frequency Response |
250k Hz
vs
150k Hz
|
Generates higher frequency |
 Height |
324mm
vs
415mm
|
Easier to fit in smaller spaces |
 Base Surface Area |
1225cm2
vs
1866cm2
|
Takes less floor space |
| Woofer Size |
12 inches
vs
8 inches
|
Larger woofer |
 Price per pair* |
300USD
vs
899USD
|
costs less (*prices may change depending on the seller, location and time) |
| General |
GoldenEar ForceField 30 |
JBL Stage A120P |
| Brand |
GoldenEar |
JBL |
| Speaker Type |
Powered Subwoofer |
Powered Subwoofer |
| Max Amplifier Output |
1000 watts |
250 watts |
| Frequency Response |
18-250 Hz |
32-150 Hz |
Amplifier |
|
|
| Watts RMS (Continuous) |
1000-watt RMS |
250-watt RMS |
| Watts Peak (Max) |
n/a |
500-watt RMS |
Drivers |
|
|
| Woofer Quantity |
1 |
1 |
| Woofer Size |
8" |
12" |
| Woofer Composition |
Polypropylene |
Polycellulose |
| Tweeter Size |
- |
- |
| Aimable Tweeter |
No |
No |
| Midrange Driver |
No |
No |
| Firing Direction |
front and bottom |
front |
Physical Specs |
|
|
| Height |
324.0mm (12.8") |
415.0mm (16.3") |
| Width |
291.0mm (11.5") |
393.0mm (15.5") |
| Depth |
421.0mm (16.6") |
475.0mm (18.7") |
| Weight |
14.32kg (31.5lbs) |
18.68kg (41.1lbs) |
| Enclosure |
Passive Radiator |
Bass reflex |
| Grille |
n/a |
Yes |
| Moisture Resistancy |
No |
No |
Connections |
|
|
Other |
|
|
| Parts Warranty |
3 Years |
1 Year |
| Labor Warranty |
3 Years |
1 Year |