In this review, we will be comparing Theatrus TS15 Passive 15" Subwoofer and ForceField 4, two Powered Subwoofer speakers from Aperion and GoldenEar. 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 Aperion Theatrus TS15 Passive 15" Subwoofer and GoldenEar ForceField 4 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.
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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 Aperion Theatrus TS15 Passive 15" Subwooferand GoldenEar ForceField 4 have a single woofer setup however the Aperion Theatrus TS15 Passive 15" Subwoofer's woofer is 15-inch whereas the GoldenEar ForceField 4 features a 10-inch woofer.
Frequency Response
Theatrus TS15 Passive 15" Subwoofer has a frequency range of 18-400 Hz whereas ForceField 4 has a frequency range of 14-250 Hz. With a minimum frequency of 14Hz, the ForceField 4 can go slightly deeper then the Theatrus TS15 Passive 15" Subwoofer'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
Aperion Theatrus TS15 Passive 15" Subwoofer
High Frequency
Subwoofer Speakers
Aperion Theatrus TS15 Passive 15" Subwoofer
Cabinet Type
The Aperion Theatrus TS15 Passive 15" Subwoofer 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 GoldenEar ForceField 4 have Passive Radiator type enclosure. 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.
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 Aperion Theatrus TS15 Passive 15" Subwoofer's and GoldenEar ForceField 4's external dimensions. Aperion Theatrus TS15 Passive 15" Subwoofer has external dimensions of 500.4 x 500.4 x 401.3mm (19.7 x 19.7 x 15.8inch) whereas GoldenEar ForceField 4 has external dimensions of 331.0 x 340.0 x 482.0mm (13inch x 13-3/8inch x 18-15/16inch).
GoldenEar ForceField 4 is 160.4mm narrower and 169.4mm shorter than Aperion Theatrus TS15 Passive 15" Subwoofer but it is also 80.7mm deeper.
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 Aperion Theatrus TS15 Passive 15" Subwoofer is approximately 2008.1cm2 / 311.3inch2 and base area of the GoldenEar ForceField 4 is approximately 1638.8cm2 / 254.0inch2. The Theatrus TS15 Passive 15" Subwoofer requires 23% more surface area than the ForceField 4 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 Aperion Theatrus TS15 Passive 15" Subwoofer weighs 35.02kg / 77lbs and the GoldenEar ForceField 4 weighs 14.55kg / 32lbs. This makes the Theatrus TS15 Passive 15" Subwoofer 141% heavier than the ForceField 4.
Here is a comparison of how Theatrus TS15 Passive 15" Subwoofer and ForceField 4's weights compare with the average, max and min weights in Powered Subwoofer class.
Weight
All Subwoofer Speakers
Aperion Theatrus TS15 Passive 15" Subwoofer
 Woofer Size |
15 inches
vs
10 inches
|
Larger woofer |
 High Frequency Response |
400k Hz
vs
250k Hz
|
Generates higher frequency |
| Low Frequency Response |
14 Hz
vs
18 Hz
|
Generates deeper bass |
 Height |
331mm
vs
500mm
|
Easier to fit in smaller spaces |
 Base Surface Area |
1638cm2
vs
2008cm2
|
Takes less floor space |
 Price per pair* |
799USD
vs
1449USD
|
costs less (*prices may change depending on the seller, location and time) |
| General |
Aperion Theatrus TS15 Passive 15" Subwoofer |
GoldenEar ForceField 4 |
| Brand |
Aperion |
GoldenEar |
| Speaker Type |
Powered Subwoofer |
Powered Subwoofer |
| Sensitivity |
88 dB |
n/a |
| Impedance |
4 ohms |
n/a |
| Frequency Response |
18-400 Hz |
14-250 Hz |
Amplifier |
|
|
| Watts RMS (Continuous) |
n/a |
1200-watt RMS |
Drivers |
|
|
| Woofer Quantity |
1 |
1 |
| Woofer Size |
15" |
10" |
| Woofer Composition |
|
Polypropylene |
| Tweeter Size |
- |
- |
| Aimable Tweeter |
No |
No |
| Midrange Driver |
No |
No |
| Firing Direction |
n/a |
front |
Physical Specs |
|
|
| Height |
500.4mm (19.7") |
331.0mm (13") |
| Width |
500.4mm (19.7") |
340.0mm (13.4") |
| Depth |
401.3mm (15.8") |
482.0mm (19") |
| Weight |
35.02kg (77lbs) |
14.55kg (32lbs) |
| Enclosure |
Acoustic Suspension |
Passive Radiator |
| Grille |
Yes |
n/a |
| Moisture Resistancy |
No |
No |
Connections |
|
|
Other |
|
|
| Parts Warranty |
|
3 Years |
| Labor Warranty |
|
3 Years |