In this review, we will be comparing R-100SW and SX-120, two Powered Subwoofer speakers from Klipsch and Cambridge Audio. 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-100SW and Cambridge Audio SX-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.
Drivers
The efficiency of a subwoofer is directly proportional to the total radiating are squared hence the woofer quantity and diameter.Both Klipsch R-100SWand Cambridge Audio SX-120 have a single woofer setup however the Klipsch R-100SW's woofer is 10-inch whereas the Cambridge Audio SX-120 features a 8-inch woofer.
Frequency Response
R-100SW has a frequency range of 32-120 Hz whereas SX-120 has a frequency range of 34-150 Hz. With a minimum frequency of 32Hz, the R-100SW can go slightly deeper then the SX-120's min frequency of 34Hz.
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 Klipsch R-100SW has a Bass reflex type cabinet. On the other hand the Cambridge Audio SX-120 have Bass Reflex type enclosure. 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-100SW's and Cambridge Audio SX-120's external dimensions. 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) whereas Cambridge Audio SX-120 has external dimensions of 296.0 x 297.0 x 350.0mm (11-5/8 x 11-11/16 x 13-3/4inch).
Klipsch R-100SW is clearly the larger of the two speakers. Its body is 23mm wider, 76mm taller and 109mm deeper than Cambridge Audio SX-120.
Below you can see the front view size comparison of Klipsch R-100SW and Cambridge Audio SX-120 in scale.
Comparison image of Klipsch R-100SW and Cambridge Audio SX-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 Klipsch R-100SW is approximately 1468.8cm2 / 227.7inch2 and base area of the Cambridge Audio SX-120 is approximately 1039.5cm2 / 161.1inch2. The R-100SW requires 41% more surface area than the SX-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 Klipsch R-100SW weighs 10.91kg / 24lbs and the Cambridge Audio SX-120 weighs 7.73kg / 17lbs. This makes the R-100SW 41% heavier than the SX-120.
Here is a comparison of how R-100SW and SX-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 Klipsch R-100SW?
Here are the items that are included inside the box of R-100SW:
- Powered sub
- Grille (installed)
- 6.5-feet AC power cord
- User Manual
- Important Safety Instructions
- Warranty Information
What's in the Box of Cambridge Audio SX-120?
Here are the items that come with the SX-120:
- Powered subwoofer
- 6-feet AC power cord
- Grille
- 4 Spiked feet
- Installation Guide
- Important Safety Instructions
 Woofer Size |
10 inches
vs
8 inches
|
Larger woofer |
| Low Frequency Response |
32 Hz
vs
34 Hz
|
Generates deeper bass |
 Price per pair* |
275USD
vs
319USD
|
costs less (*prices may change depending on the seller, location and time) |
 High Frequency Response |
150 Hz
vs
120 Hz
|
Generates higher frequency |
 Height |
296mm
vs
372mm
|
Easier to fit in smaller spaces |
 Base Surface Area |
1039cm2
vs
1468cm2
|
Takes less floor space |
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.
Klipsch R-100SW needs about 41% more floor area. Klipsch R-100SW stands 109mm further into the room. Klipsch R-100SW is 76mm taller.
| General |
Klipsch R-100SW |
Cambridge Audio SX-120 |
| Brand |
Klipsch |
Cambridge Audio |
| Speaker Type |
Powered Subwoofer |
Powered Subwoofer |
| Max Amplifier Output |
150 watts |
70 watts |
| Frequency Response |
32-120 Hz |
34-150 Hz |
Amplifier |
|
|
| Watts RMS (Continuous) |
150-watt RMS |
70-watt RMS |
| Watts Peak (Max) |
300-watt RMS |
n/a |
Drivers |
|
|
| Woofer Quantity |
1 |
1 |
| Woofer Size |
10" |
8" |
| Woofer Composition |
Copper-spun IMG |
Treated Paper |
| Tweeter Size |
- |
- |
| Aimable Tweeter |
No |
No |
| Midrange Driver |
No |
No |
| Firing Direction |
front |
front |
Physical Specs |
|
|
| Height |
372.0mm (14.6") |
296.0mm (11.7") |
| Width |
320.0mm (12.6") |
297.0mm (11.7") |
| Depth |
459.0mm (18.1") |
350.0mm (13.8") |
| Weight |
10.91kg (24lbs) |
7.73kg (17lbs) |
| Enclosure |
Bass reflex |
Bass Reflex |
| Grille |
Yes |
Yes |
| Moisture Resistancy |
No |
No |
Connections |
|
|
Other |
|
|
| Parts Warranty |
2 Years |
3 Years |
| Labor Warranty |
2 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 | evenly matched | Effectively the same reach (32Hz vs 34Hz). |
| Amplifier power | A | Klipsch R-100SW has the bigger amplifier - 150W against 70W RMS, about 3.3dB more on tap. In a large room that is headroom before the DSP starts limiting. |
| Driver area | A | Klipsch R-100SW moves more air: 10" against 8" is 1.56x the cone area, not the 1.25x 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 | Cambridge Audio SX-120 is about 44% 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 | Cambridge Audio SX-120 carries 3 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-100SW costs less - $275 against $319, about 14% less. |
A Klipsch R-100SW B Cambridge Audio SX-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?
Klipsch R-100SW has the edge on paper, though not by much. The "depends" rows are more likely to decide this than the score is. If placement is the constraint - a corner, behind a sofa, under a desk - Cambridge Audio SX-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.