In this review, we will be comparing PC13-Ultra and SW-15, two Powered Subwoofer speakers from SVS and Wharfedale. 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 Wharfedale SW-15 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.
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 Wharfedale SW-15 have a single woofer setup however the SVS PC13-Ultra's woofer is 13.5-inch whereas the Wharfedale SW-15 features a 15-inch woofer.
Frequency Response
PC13-Ultra has a frequency range of 15-200 Hz whereas SW-15 has a frequency range of 30-120 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 SW-15's min frequency of 30Hz.
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
Both SVS PC13-Ultra and Wharfedale SW-15 have Bass Reflex type cabinets. 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.
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 SVS PC13-Ultra's and Wharfedale SW-15'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 Wharfedale SW-15 has external dimensions of 570.0 x 493.0 x 615.0mm (22-7/16inch x 19-3/8inch x 24-3/16inch).
SVS PC13-Ultra is 71mm narrower and 193mm less deeper than Wharfedale SW-15 but it is also 624mm taller.
Size, drawn to scale
Both speakers and both views share one scale, so everything here is directly comparable. Hover a box for its dimensions.
One scale for both, standing on the same surface and pushed back to the same wall, so the deeper one visibly sticks out further.
Wharfedale SW-15 needs about 70% more floor or shelf area. Wharfedale SW-15 is 193mm deeper, so it stands that much further out from the wall. SVS PC13-Ultra is 624mm taller.
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 Wharfedale SW-15 is approximately 3032.0cm2 / 470.0inch2. The PC13-Ultra requires 41% less surface area than the SW-15 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 Wharfedale SW-15 weighs 31.57kg / 69.5lbs. This makes the PC13-Ultra 29% heavier than the SW-15.
Here is a comparison of how PC13-Ultra and SW-15's weights compare with the average, max and min weights in Powered Subwoofer class.
Weight
All Subwoofer Speakers
 Low Frequency Response |
15 Hz
vs
30 Hz
|
Generates deeper bass |
 High Frequency Response |
200 Hz
vs
120 Hz
|
Generates higher frequency |
 Base Surface Area |
1780cm2
vs
3032cm2
|
Takes less floor space |
| Woofer Size |
15 inches
vs
13.5 inches
|
Larger woofer |
 Height |
570mm
vs
1194mm
|
Easier to fit in smaller spaces |
 Price per pair* |
1199USD
vs
1700USD
|
costs less (*prices may change depending on the seller, location and time) |
Size, drawn to scale
Both subwoofers and both views share one scale, so everything here is directly comparable. Hover a box for its dimensions.
One scale for both, standing on the same floor and pushed back to the same wall, so the bigger one visibly takes more of the room.
Wharfedale SW-15 needs about 70% more floor area. Wharfedale SW-15 stands 193mm further into the room. SVS PC13-Ultra is 624mm taller.
| General |
SVS PC13-Ultra |
Wharfedale SW-15 |
| Brand |
SVS |
Wharfedale |
| Speaker Type |
Powered Subwoofer |
Powered Subwoofer |
| Max Amplifier Output |
1000 watts |
400 watts |
| Frequency Response |
15-200 Hz |
30-120 Hz |
Amplifier |
|
|
| Watts RMS (Continuous) |
1000-watt RMS |
400-watt RMS |
| Watts Peak (Max) |
3600-watt RMS |
n/a |
Drivers |
|
|
| Woofer Quantity |
1 |
1 |
| Woofer Size |
13.5" |
15" |
| Woofer Composition |
Fiberglass composite |
Paper |
| Tweeter Size |
- |
- |
| Aimable Tweeter |
No |
No |
| Midrange Driver |
No |
No |
| Firing Direction |
front |
front |
Physical Specs |
|
|
| Height |
1194.0mm (47") |
570.0mm (22.4") |
| Width |
422.0mm (16.6") |
493.0mm (19.4") |
| Depth |
422.0mm (16.6") |
615.0mm (24.2") |
| Weight |
40.80kg (89.8lbs) |
31.57kg (69.5lbs) |
| Enclosure |
Bass Reflex |
Bass Reflex |
| Grille |
Yes |
Yes |
| Moisture Resistancy |
No |
No |
Connections |
|
|
Other |
|
|
| Parts Warranty |
5 Years |
3 Years |
| Labor Warranty |
5 Years |
3 Years |
No single best subwoofer here. Your room, where the box can physically go, and whether this is mainly for films or mainly for music will settle it long before the specs do.
| Area | Better | Why |
|---|
| Bass depth | A | SVS PC13-Ultra goes deeper - 15Hz against 30Hz. Under 20Hz is felt more than heard - the bottom of a pipe organ and the bottom of a film mix. |
| Amplifier power | A | SVS PC13-Ultra has the bigger amplifier - 1000W against 400W RMS, about 4dB more on tap. In a large room that is headroom before the DSP starts limiting. |
| Driver area | B | Wharfedale SW-15 moves more air: 15" against 13.5" is 1.23x the cone area, not the 1.11x the diameters suggest. More area means the same output with less excursion, and less distortion with it. |
| Enclosure | evenly matched | Both are ported designs, so they roll off in much the same way. |
| Cabinet size | depends | Wharfedale SW-15 is about 19% smaller by volume. In a subwoofer that is a real trade rather than a preference: box volume is how you get output low down without a bigger amplifier. |
| Warranty | A | SVS PC13-Ultra carries 5 years on parts against 3 years. A subwoofer amplifier works harder than anything else in the system, so this is not a throwaway line. |
| Price | B | Wharfedale SW-15 costs less - $1,199 against $1,700, about 29% less. |
A SVS PC13-Ultra B Wharfedale SW-15
depends neither is better in the abstract - it turns on your room, your system or how you will use them. Only specs published for both subwoofers are judged; anything missing on either side is left out rather than guessed.
Which should you choose?
The usual trade-off: SVS PC13-Ultra measures better, Wharfedale SW-15 costs about 29% less. In a normal room, placement will make a bigger difference than the gap between these two.
One thing outweighs everything above: where the subwoofer stands. Room modes can add or remove 10dB or more at a given seat, which is far larger than any difference on this page. Before spending more, try the sub in two or three positions - the crawl test, where you put it in the listening seat and crawl the room to find where the bass sounds best, costs nothing and usually beats an upgrade.