In this review, we will be comparing PB16-Ultra and SPL-120, two Powered Subwoofer speakers from SVS and Klipsch. 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 PB16-Ultra and Klipsch SPL-120 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 SVS PB16-Ultraand Klipsch SPL-120 have a single woofer setup however the SVS PB16-Ultra's woofer is 16-inch whereas the Klipsch SPL-120 features a 12-inch woofer.
Frequency Response
PB16-Ultra has a frequency range of 13-280 Hz whereas SPL-120 has a frequency range of 24-125 Hz. With a minimum frequency of 13Hz, the PB16-Ultra can go significantly deeper on the low side and provide stronger bass compared to the SPL-120's min frequency of 24Hz.
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 PB16-Ultra and Klipsch SPL-120 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 PB16-Ultra's and Klipsch SPL-120's external dimensions. SVS PB16-Ultra has external dimensions of 635.0 x 553.0 x 788.0mm (25 x 21-3/4 x 31inch) whereas Klipsch SPL-120 has external dimensions of 450.0 x 375.0 x 540.0mm (17-11/16 x 14-3/4 x 21-1/4inch).
SVS PB16-Ultra is clearly the larger of the two speakers. Its body is 178mm wider, 185mm taller and 248mm deeper than Klipsch SPL-120.
Below you can see the front view size comparison of SVS PB16-Ultra and Klipsch SPL-120 in scale.
Comparison image of SVS PB16-Ultra and Klipsch SPL-120 Size and External Dimensions
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 PB16-Ultra is approximately 4357.6cm2 / 675.4inch2 and base area of the Klipsch SPL-120 is approximately 2025.0cm2 / 313.9inch2. The PB16-Ultra requires 115% more surface area than the SPL-120 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 SVS PB16-Ultra weighs 79.32kg / 174.5lbs and the Klipsch SPL-120 weighs 20.45kg / 45lbs. This makes the PB16-Ultra 288% heavier than the SPL-120.
Here is a comparison of how PB16-Ultra and SPL-120's weights compare with the average, max and min weights in Powered Subwoofer class.
Weight
All Subwoofer Speakers
What's in the Box of SVS PB16-Ultra?
Here are the items that are included inside the box of PB16-Ultra:
- Powered subwoofer
- Grille
- 5-feet AC power cord
- Remote control (3V battery installed)
- Owners Manual
What's in the Box of Klipsch SPL-120?
Here are the items that come with the SPL-120:
- Powered sub
- Grille
- 6.5-feet AC power cord
- User Manual
- Important Safety Instructions
- Warranty Information
 Woofer Size |
16 inches
vs
12 inches
|
Larger woofer |
| Low Frequency Response |
13 Hz
vs
24 Hz
|
Generates deeper bass |
 High Frequency Response |
280 Hz
vs
125 Hz
|
Generates higher frequency |
 App-Based Control |
iOS,Android
vs
None
|
Control the speaker via an app |
 Height |
450mm
vs
635mm
|
Easier to fit in smaller spaces |
 Base Surface Area |
2025cm2
vs
4357cm2
|
Takes less floor space |
 Price per pair* |
499USD
vs
2900USD
|
costs less (*prices may change depending on the seller, location and time) |
 Wireless Operation |
Optional
vs
No
|
Connect your subwoofer to your system wireless |
| General |
SVS PB16-Ultra |
Klipsch SPL-120 |
| Brand |
SVS |
Klipsch |
| Speaker Type |
Powered Subwoofer |
Powered Subwoofer |
| Max Amplifier Output |
1500 watts |
300 watts |
| Frequency Response |
13-280 Hz |
24-125 Hz |
Amplifier |
|
|
| Watts RMS (Continuous) |
1500-watt RMS |
300-watt RMS |
| Watts Peak (Max) |
n/a |
600-watt RMS |
Drivers |
|
|
| Woofer Quantity |
1 |
1 |
| Woofer Size |
16" |
12" |
| Woofer Composition |
Composite fiberglass/resin |
Cerametallic |
| Tweeter Size |
- |
- |
| Aimable Tweeter |
No |
No |
| Midrange Driver |
No |
No |
| Firing Direction |
front |
front |
Physical Specs |
|
|
| Height |
635.0mm (25") |
450.0mm (17.7") |
| Width |
553.0mm (21.8") |
375.0mm (14.8") |
| Depth |
788.0mm (31") |
540.0mm (21.3") |
| Weight |
79.32kg (174.5lbs) |
20.45kg (45lbs) |
| Enclosure |
Bass Reflex |
Bass Reflex |
| Grille |
Yes |
Yes |
| Moisture Resistancy |
No |
No |
Connections |
|
|
Other |
|
|
| Parts Warranty |
5 Years |
2 Years |
| Labor Warranty |
5 Years |
2 Years |
Two quite different sizes of subwoofer. Room volume decides this more than anything else on the page: a big driver in a small room is wasted, and a small one in a large room is worked to death.
| Area | Better | Why |
|---|
| Bass depth | A | SVS PB16-Ultra goes deeper - 13Hz against 24Hz. Under 20Hz is felt more than heard - the bottom of a pipe organ and the bottom of a film mix. |
| Amplifier power | A | SVS PB16-Ultra has the bigger amplifier - 1500W against 300W RMS, about 7dB more on tap. In a large room that is headroom before the DSP starts limiting. |
| Driver area | A | SVS PB16-Ultra moves more air: 16" against 12" is 1.78x the cone area, not the 1.33x 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. |
| Wireless option | depends | Only Klipsch SPL-120 offers a wireless link (as a paid option). It decides where the sub can go if you cannot run a cable, and is worth nothing if you can. |
| Cabinet size | depends | Klipsch SPL-120 is about 67% 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 PB16-Ultra carries 5 years on parts against 2 years. A subwoofer amplifier works harder than anything else in the system, so this is not a throwaway line. |
| Price | B | Klipsch SPL-120 costs less - $499 against $2,900, about 83% less. |
A SVS PB16-Ultra B Klipsch SPL-120
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 PB16-Ultra measures better, Klipsch SPL-120 costs about 83% less. In a normal room, placement will make a bigger difference than the gap between these two. Two small subwoofers beat one big one in most rooms - a pair evens out the room modes in a way no single box can, whatever its specs. At $499 each, two Klipsch SPL-120 cost about $998 against $2,900 for one of the other, which is worth a thought. If placement is the constraint - a corner, behind a sofa, under a desk - Klipsch SPL-120 is the one that will actually go there, and a well-placed small subwoofer beats a badly-placed big one every time.
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.