In this review, we will be comparing PC13-Ultra and A120P, two Powered Subwoofer speakers from SVS 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 SVS PC13-Ultra 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 SVS PC13-Ultra 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 SVS PC13-Ultraand JBL Stage A120P have a single woofer setup however the SVS PC13-Ultra's woofer is 13.5-inch whereas the JBL Stage A120P features a 12-inch woofer.
Frequency Response
PC13-Ultra has a frequency range of 15-200 Hz whereas A120P has a frequency range of 32-150 Hz. With a minimum frequency of 15Hz, the PC13-Ultra 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 SVS PC13-Ultra 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
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 SVS PC13-Ultra's and JBL Stage A120P's external dimensions. SVS PC13-Ultra has external dimensions of 1194.0 x 422.0 x 422.0mm ( 47 x 16-5/8 x 16-5/8inch) 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 29mm narrower and 779mm shorter than SVS PC13-Ultra but it is also 53mm 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 SVS PC13-Ultra is approximately 1780.8cm2 / 276.0inch2 and base area of the JBL Stage A120P is approximately 1866.8cm2 / 289.4inch2. The PC13-Ultra requires 5% 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 SVS PC13-Ultra weighs 40.80kg / 89.8lbs and the JBL Stage A120P weighs 18.68kg / 41.1lbs. This makes the PC13-Ultra 118% heavier than the A120P.
Here is a comparison of how PC13-Ultra and A120P's weights compare with the average, max and min weights in Powered Subwoofer class.
Weight
All Subwoofer Speakers
 Woofer Size |
13.5 inches
vs
12 inches
|
Larger woofer |
| Low Frequency Response |
15 Hz
vs
32 Hz
|
Generates deeper bass |
 High Frequency Response |
200k Hz
vs
150k Hz
|
Generates higher frequency |
 Base Surface Area |
1780cm2
vs
1866cm2
|
Takes less floor space |
 Height |
415mm
vs
1194mm
|
Easier to fit in smaller spaces |
 Price per pair* |
300USD
vs
1700USD
|
costs less (*prices may change depending on the seller, location and time) |
| General |
SVS PC13-Ultra |
JBL Stage A120P |
| Brand |
SVS |
JBL |
| Speaker Type |
Powered Subwoofer |
Powered Subwoofer |
| Max Amplifier Output |
1000 watts |
250 watts |
| Frequency Response |
15-200 Hz |
32-150 Hz |
Amplifier |
|
|
| Watts RMS (Continuous) |
1000-watt RMS |
250-watt RMS |
| Watts Peak (Max) |
3600-watt RMS |
500-watt RMS |
Drivers |
|
|
| Woofer Quantity |
1 |
1 |
| Woofer Size |
13.5" |
12" |
| Woofer Composition |
Fiberglass composite |
Polycellulose |
| Tweeter Size |
- |
- |
| Aimable Tweeter |
No |
No |
| Midrange Driver |
No |
No |
| Firing Direction |
front |
front |
Physical Specs |
|
|
| Height |
1194.0mm (47") |
415.0mm (16.3") |
| Width |
422.0mm (16.6") |
393.0mm (15.5") |
| Depth |
422.0mm (16.6") |
475.0mm (18.7") |
| Weight |
40.80kg (89.8lbs) |
18.68kg (41.1lbs) |
| Enclosure |
Bass Reflex |
Bass reflex |
| Grille |
Yes |
Yes |
| Moisture Resistancy |
No |
No |
Connections |
|
|
Other |
|
|
| Parts Warranty |
5 Years |
1 Year |
| Labor Warranty |
5 Years |
1 Year |