In this review, we will be comparing Alpha S10 and R-100SW, two Powered Subwoofer speakers from PSB 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 PSB Alpha S10 and Klipsch R-100SW 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.PSB Alpha S10and Klipsch R-100SW have the same driver set up: Both subwoofers have 1 x 10" drivers.
Frequency Response
Alpha S10 has a frequency range of 28-150 Hz whereas R-100SW has a frequency range of 32-120 Hz. With a minimum frequency of 28Hz, the Alpha S10 can go slightly deeper then the R-100SW'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 PSB Alpha S10 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 Klipsch R-100SW 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 PSB Alpha S10's and Klipsch R-100SW's external dimensions. PSB Alpha S10 has external dimensions of 358.0 x 358.0 x 472.0mm (14-1/16 x 14-1/16 x 18-9/16inch) whereas Klipsch R-100SW has external dimensions of 372.0 x 320.0 x 459.0mm (14-5/8 x 12-9/16 x 18-1/16inch).
Klipsch R-100SW is 38mm narrower and 13mm less deeper than PSB Alpha S10 but it is also 14mm taller.
Below you can see the front view size comparison of PSB Alpha S10 and Klipsch R-100SW in scale.
Comparison image of PSB Alpha S10 and Klipsch R-100SW 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 PSB Alpha S10 is approximately 1689.8cm2 / 261.9inch2 and base area of the Klipsch R-100SW is approximately 1468.8cm2 / 227.7inch2. The Alpha S10 requires 15% more surface area than the R-100SW 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 PSB Alpha S10 weighs 13.64kg / 30lbs and the Klipsch R-100SW weighs 10.91kg / 24lbs. This makes the Alpha S10 25% heavier than the R-100SW.
Here is a comparison of how Alpha S10 and R-100SW's weights compare with the average, max and min weights in Powered Subwoofer class.
Weight
All Subwoofer Speakers
What's in the Box of PSB Alpha S10?
Here are the items that are included inside the box of Alpha S10:
- Powered subwoofer
- Grille
- 5-feet AC power cord
- 4 Rubber feet
- 4 Spike feet
- 4 Hex-nuts
- Quick Start Guide
- Important Safety Instructions
- Warranty Information
What's in the Box of Klipsch R-100SW?
Here are the items that come with the R-100SW:
- Powered sub
- Grille (installed)
- 6.5-feet AC power cord
- User Manual
- Important Safety Instructions
- Warranty Information
 Low Frequency Response |
28 Hz
vs
32 Hz
|
Generates deeper bass |
 High Frequency Response |
150 Hz
vs
120 Hz
|
Generates higher frequency |
 Height |
358mm
vs
372mm
|
Easier to fit in smaller spaces |
 Base Surface Area |
1468cm2
vs
1689cm2
|
Takes less floor space |
 Price per pair* |
275USD
vs
699USD
|
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.
PSB Alpha S10 needs about 15% more floor area. Klipsch R-100SW is 14mm taller.
| General |
PSB Alpha S10 |
Klipsch R-100SW |
| Brand |
PSB |
Klipsch |
| Speaker Type |
Powered Subwoofer |
Powered Subwoofer |
| Max Amplifier Output |
150 watts |
150 watts |
| Frequency Response |
28-150 Hz |
32-120 Hz |
Amplifier |
|
|
| Watts RMS (Continuous) |
150-watt RMS |
150-watt RMS |
| Watts Peak (Max) |
n/a |
300-watt RMS |
Drivers |
|
|
| Woofer Quantity |
1 |
1 |
| Woofer Size |
10" |
10" |
| Woofer Composition |
Polypropylene |
Copper-spun IMG |
| Tweeter Size |
- |
- |
| Aimable Tweeter |
No |
No |
| Midrange Driver |
No |
No |
| Firing Direction |
front |
front |
Physical Specs |
|
|
| Height |
358.0mm (14.1") |
372.0mm (14.6") |
| Width |
358.0mm (14.1") |
320.0mm (12.6") |
| Depth |
472.0mm (18.6") |
459.0mm (18.1") |
| Weight |
13.64kg (30lbs) |
10.91kg (24lbs) |
| Enclosure |
Bass Reflex |
Bass reflex |
| Grille |
Yes |
Yes |
| Moisture Resistancy |
No |
No |
Connections |
|
|
Other |
|
|
| Parts Warranty |
1 Year |
2 Years |
| Labor Warranty |
1 Year |
2 Years |
Different price classes - PSB Alpha S10 costs roughly 2.5x what Klipsch R-100SW does. Before paying it, read the note below about two smaller subwoofers.
| Area | Better | Why |
|---|
| Bass depth | A | PSB Alpha S10 goes deeper - 28Hz against 32Hz. A real difference, though most music has little content below 32Hz. |
| Amplifier power | evenly matched | Much the same amplifier (150W vs 150W RMS) - under 1dB apart. |
| Driver area | evenly matched | Near-identical radiating area (10" against 10"). |
| Enclosure | evenly matched | Both are ported designs, so they roll off in much the same way. |
| Warranty | B | Klipsch R-100SW carries 2 years on parts against 1 years. A subwoofer amplifier works harder than anything else in the system, so this is not a throwaway line. |
| Price | B | Klipsch R-100SW costs less - $275 against $699, about 61% less. |
A PSB Alpha S10 B Klipsch R-100SW
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?
Neither runs away with it - they trade advantages. Let your room size and where the box can actually stand settle it. 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 $275 each, two Klipsch R-100SW cost about $550 against $699 for one of the other, which is worth a thought.
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.