In this review, we will be comparing R-101SW and PB-4000, two Powered Subwoofer speakers from Klipsch and SVS. 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 Klipsch R-101SW and SVS PB-4000 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 Klipsch R-101SWand SVS PB-4000 have a single woofer setup however the Klipsch R-101SW's woofer is 10-inch whereas the SVS PB-4000 features a 13.5-inch woofer.
Frequency Response
R-101SW has a frequency range of 29.5-160 Hz whereas PB-4000 has a frequency range of 16-200 Hz. With a minimum frequency of 16Hz, the PB-4000 can go significantly deeper on the low side and provide stronger bass compared to the R-101SW'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 Klipsch R-101SW and SVS PB-4000 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 Klipsch R-101SW's and SVS PB-4000's external dimensions. Klipsch R-101SW has external dimensions of 370.0 x 358.0 x 529.0mm (14-9/16inch x 14-1/16inch x 20-13/16inch) whereas SVS PB-4000 has external dimensions of 596.0 x 521.0 x 762.0mm (23-7/16 x 20-1/2 x 30inch).
SVS PB-4000 is clearly the larger of the two speakers. Its body is 163mm wider, 226mm taller and 233mm deeper than Klipsch R-101SW.
Below you can see the front view size comparison of Klipsch R-101SW and SVS PB-4000 in scale.
Comparison image of Klipsch R-101SW and SVS PB-4000 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 Klipsch R-101SW is approximately 1893.8cm2 / 293.5inch2 and base area of the SVS PB-4000 is approximately 3970.0cm2 / 615.4inch2. The R-101SW requires 52% less surface area than the PB-4000 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 Klipsch R-101SW weighs 13.91kg / 30.6lbs and the SVS PB-4000 weighs 69.64kg / 153.2lbs. This makes the PB-4000 401% heavier than the R-101SW.
Here is a comparison of how R-101SW and PB-4000's weights compare with the average, max and min weights in Powered Subwoofer class.
Weight
All Subwoofer Speakers
What's in the Box of Klipsch R-101SW?
Here are the items that are included inside the box of R-101SW:
- Powered subwoofer
- Grille
- 6.5-feet AC power cord
- User Manual
- Important Safety Instructions
- Warranty Information
What's in the Box of SVS PB-4000?
Here are the items that come with the PB-4000:
- Powered subwoofer
- Grille
- 6-feet AC power cord
- Remote control
- 4 Elastomer feet
- Owners Manual
- Important Safety Instructions
 Height |
370mm
vs
596mm
|
Easier to fit in smaller spaces |
 Base Surface Area |
1893cm2
vs
3970cm2
|
Takes less floor space |
 Price per pair* |
499USD
vs
2300USD
|
costs less (*prices may change depending on the seller, location and time) |
 Woofer Size |
13.5 inches
vs
10 inches
|
Larger woofer |
| Low Frequency Response |
16 Hz
vs
30 Hz
|
Generates deeper bass |
 High Frequency Response |
200 Hz
vs
160 Hz
|
Generates higher frequency |
 Handheld Remote |
Yes
vs
No
|
Control the speaker by the included RC |
 App-Based Control |
iOS,Android
vs
None
|
Control the speaker via an app |
| General |
Klipsch Reference R-101SW |
SVS PB-4000 |
| Brand |
Klipsch |
SVS |
| Speaker Type |
Powered Subwoofer |
Powered Subwoofer |
| Max Amplifier Output |
150 watts |
1200 watts |
| Frequency Response |
29.5-160 Hz |
16-200 Hz |
Amplifier |
|
|
| Watts RMS (Continuous) |
150-watt RMS |
1200-watt RMS |
Drivers |
|
|
| Woofer Quantity |
1 |
1 |
| Woofer Size |
10" |
13.5" |
| Woofer Composition |
Spun-Copper TCP |
Composite/Glass Fiber |
| Tweeter Size |
- |
- |
| Aimable Tweeter |
No |
No |
| Midrange Driver |
No |
No |
| Firing Direction |
front |
front |
Physical Specs |
|
|
| Height |
370.0mm (14.6") |
596.0mm (23.5") |
| Width |
358.0mm (14.1") |
521.0mm (20.5") |
| Depth |
529.0mm (20.8") |
762.0mm (30") |
| Weight |
13.91kg (30.6lbs) |
69.64kg (153.2lbs) |
| Enclosure |
Bass Reflex |
Bass Reflex |
| Grille |
Yes |
Yes |
| Moisture Resistancy |
No |
No |
Connections |
|
|
Other |
|
|
| Parts Warranty |
2 Years |
5 Years |
| Labor Warranty |
2 Years |
5 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 | B | SVS PB-4000 goes deeper - 16Hz against 30Hz. Under 20Hz is felt more than heard - the bottom of a pipe organ and the bottom of a film mix. |
| Amplifier power | B | SVS PB-4000 has the bigger amplifier - 1200W against 150W RMS, about 9dB more on tap. In a large room that is headroom before the DSP starts limiting. |
| Driver area | B | SVS PB-4000 moves more air: 13.5" against 10" is 1.82x the cone area, not the 1.35x 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 | Klipsch R-101SW is about 70% 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 | B | SVS PB-4000 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 | A | Klipsch R-101SW costs less - $499 against $2,300, about 78% less. |
A Klipsch R-101SW B SVS PB-4000
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 PB-4000 measures better, Klipsch R-101SW costs about 78% 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 R-101SW cost about $998 against $2,300 for one of the other, which is worth a thought. If placement is the constraint - a corner, behind a sofa, under a desk - Klipsch R-101SW 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.