In this review, we will be comparing Theatrus TS15 Passive 15" Subwoofer and A120P, two Powered Subwoofer speakers from Aperion 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 Aperion Theatrus TS15 Passive 15" Subwoofer 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.
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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 JBL Stage A120P have a single woofer setup however the Aperion Theatrus TS15 Passive 15" Subwoofer's woofer is 15-inch whereas the JBL Stage A120P features a 12-inch woofer.
Frequency Response
Theatrus TS15 Passive 15" Subwoofer has a frequency range of 18-400 Hz whereas A120P has a frequency range of 32-150 Hz. With a minimum frequency of 18Hz, the Theatrus TS15 Passive 15" Subwoofer 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
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 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 Aperion Theatrus TS15 Passive 15" Subwoofer's and JBL Stage A120P'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 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 107.4mm narrower and 85.4mm shorter than Aperion Theatrus TS15 Passive 15" Subwoofer but it is also 73.7mm 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 JBL Stage A120P is approximately 1866.8cm2 / 289.4inch2. The Theatrus TS15 Passive 15" Subwoofer requires 8% 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 Aperion Theatrus TS15 Passive 15" Subwoofer weighs 35.02kg / 77lbs and the JBL Stage A120P weighs 18.68kg / 41.1lbs. This makes the Theatrus TS15 Passive 15" Subwoofer 87% heavier than the A120P.
Here is a comparison of how Theatrus TS15 Passive 15" Subwoofer and A120P'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
12 inches
|
Larger woofer |
| Low Frequency Response |
18 Hz
vs
32 Hz
|
Generates deeper bass |
 High Frequency Response |
400k Hz
vs
150k Hz
|
Generates higher frequency |
 Height |
415mm
vs
500mm
|
Easier to fit in smaller spaces |
 Base Surface Area |
1866cm2
vs
2008cm2
|
Takes less floor space |
 Price per pair* |
300USD
vs
1449USD
|
costs less (*prices may change depending on the seller, location and time) |
| General |
Aperion Theatrus TS15 Passive 15" Subwoofer |
JBL Stage A120P |
| Brand |
Aperion |
JBL |
| Speaker Type |
Powered Subwoofer |
Powered Subwoofer |
| Sensitivity |
88 dB |
n/a |
| Impedance |
4 ohms |
n/a |
| Frequency Response |
18-400 Hz |
32-150 Hz |
Amplifier |
|
|
| Watts RMS (Continuous) |
n/a |
250-watt RMS |
| Watts Peak (Max) |
n/a |
500-watt RMS |
Drivers |
|
|
| Woofer Quantity |
1 |
1 |
| Woofer Size |
15" |
12" |
| Woofer Composition |
|
Polycellulose |
| Tweeter Size |
- |
- |
| Aimable Tweeter |
No |
No |
| Midrange Driver |
No |
No |
| Firing Direction |
n/a |
front |
Physical Specs |
|
|
| Height |
500.4mm (19.7") |
415.0mm (16.3") |
| Width |
500.4mm (19.7") |
393.0mm (15.5") |
| Depth |
401.3mm (15.8") |
475.0mm (18.7") |
| Weight |
35.02kg (77lbs) |
18.68kg (41.1lbs) |
| Enclosure |
Acoustic Suspension |
Bass reflex |
| Grille |
Yes |
Yes |
| Moisture Resistancy |
No |
No |
Connections |
|
|
Other |
|
|
| Parts Warranty |
|
1 Year |
| Labor Warranty |
|
1 Year |