In this review, we will be comparing R-101SW and Concerta B8, two Powered Subwoofer speakers from Klipsch and Revel. 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 Revel Concerta B8 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-101SWand Revel Concerta B8 have a single woofer setup however the Klipsch R-101SW's woofer is 10-inch whereas the Revel Concerta B8 features a 8-inch woofer.
Frequency Response
R-101SW has a frequency range of 29.5-160 Hz whereas Concerta B8 has a frequency range of 45-200 Hz. With a minimum frequency of 30Hz, the R-101SW can go significantly deeper on the low side and provide stronger bass compared to the Concerta B8's min frequency of 45Hz.
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-101SW 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 Revel Concerta B8 have Acoustic Suspension type enclosure. Acoustic Suspension aka Sealed type subwoofers have enclosures that are sealed hence no ports or holes exists on the cabinet. Sealed designs helps to provide more accurate and tight bass responses compared to ported 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 Revel Concerta B8'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 Revel Concerta B8 has external dimensions of 355.0 x 269.0 x 288.0mm (13-15/16 x 10-9/16 x 11-5/16inch).
Klipsch R-101SW is clearly the larger of the two speakers. Its body is 89mm wider, 15mm taller and 241mm deeper than Revel Concerta B8.
Below you can see the front view size comparison of Klipsch R-101SW and Revel Concerta B8 in scale.
Comparison image of Klipsch R-101SW and Revel Concerta B8 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 Revel Concerta B8 is approximately 774.7cm2 / 120.1inch2. The R-101SW requires 144% more surface area than the Concerta B8 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-101SW weighs 13.91kg / 30.6lbs and the Revel Concerta B8 weighs 9.00kg / 19.8lbs. This makes the R-101SW 55% heavier than the Concerta B8.
Here is a comparison of how R-101SW and Concerta B8'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 Revel Concerta B8?
Here are the items that come with the Concerta B8:
- Wireless powered subwoofer
- Wireless transmitter
- AC power adapter (attached 6-feet DC cord)
- 6-feet AC power cord
- 16-feet Subwoofer/Trigger cable (male RCA and male minijack connector on each end) Owners Manual
- Important Safety Instructions
 Woofer Size |
10 inches
vs
8 inches
|
Larger woofer |
| Low Frequency Response |
30 Hz
vs
45 Hz
|
Generates deeper bass |
 High Frequency Response |
200 Hz
vs
160 Hz
|
Generates higher frequency |
 Height |
355mm
vs
370mm
|
Easier to fit in smaller spaces |
 Base Surface Area |
774cm2
vs
1893cm2
|
Takes less floor space |
 Wireless Operation |
Yes
vs
No
|
Connect your subwoofer to your system wireless |
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-101SW needs about 144% more floor area. Klipsch R-101SW stands 241mm further into the room. Klipsch R-101SW is 15mm taller.
| General |
Klipsch Reference R-101SW |
Revel Concerta B8 |
| Brand |
Klipsch |
Revel |
| Speaker Type |
Powered Subwoofer |
Powered Subwoofer |
| Max Amplifier Output |
150 watts |
200 watts |
| Frequency Response |
29.5-160 Hz |
45-200 Hz |
Amplifier |
|
|
| Watts RMS (Continuous) |
150-watt RMS |
200-watt RMS |
Drivers |
|
|
| Woofer Quantity |
1 |
1 |
| Woofer Size |
10" |
8" |
| Woofer Composition |
Spun-Copper TCP |
Paper |
| Tweeter Size |
- |
- |
| Aimable Tweeter |
No |
No |
| Midrange Driver |
No |
No |
| Firing Direction |
front |
bottom |
Physical Specs |
|
|
| Height |
370.0mm (14.6") |
355.0mm (14") |
| Width |
358.0mm (14.1") |
269.0mm (10.6") |
| Depth |
529.0mm (20.8") |
288.0mm (11.3") |
| Weight |
13.91kg (30.6lbs) |
9.00kg (19.8lbs) |
| Enclosure |
Bass Reflex |
Acoustic Suspension |
| Grille |
Yes |
n/a |
| Moisture Resistancy |
No |
No |
Connections |
|
|
Other |
|
|
| Parts Warranty |
2 Years |
5 Years |
| Labor Warranty |
2 Years |
5 Years |
A ported subwoofer against a sealed one. That is the most consequential line on this page: it decides how the bass rolls off, how it behaves in a small room, and how much output you get for the size of the box.
| Area | Better | Why |
|---|
| Bass depth | A | Klipsch R-101SW goes deeper - 30Hz against 45Hz. A real difference, though most music has little content below 45Hz. |
| Amplifier power | B | Revel Concerta B8 has the bigger amplifier - 200W against 150W RMS, about 1.2dB more on tap. In a large room that is headroom before the DSP starts limiting. |
| Driver area | A | Klipsch R-101SW 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 | depends | Klipsch R-101SW is ported - a ported box gives more output low down for its size, at the cost of a steeper roll-off below tuning; Revel Concerta B8 is sealed - a sealed box rolls off gently and is usually the easier one to integrate in a small or awkward room. Neither is better in the abstract; ported tends to suit films and sealed tends to suit music, and both generalisations have exceptions. |
| Wireless option | depends | Only Revel Concerta B8 offers a wireless link. It decides where the sub can go if you cannot run a cable, and is worth nothing if you can. |
| Driver placement | depends | Klipsch R-101SW fires front and Revel Concerta B8 fires down. A down-firing driver is more forgiving of a grille-less look and of a hard floor; a front-firing one is the safer choice on a thick carpet or a suspended timber floor. |
| Cabinet size | depends | Revel Concerta B8 is about 61% 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 | Revel Concerta B8 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 | evenly matched | Priced within a few per cent of each other. |
A Klipsch R-101SW B Revel Concerta B8
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. Films or music? If this is mainly a home cinema, Klipsch R-101SW will hit harder for the money; if it is mainly for music in a normal-sized room, Revel Concerta B8 is usually the easier one to make sound right. If placement is the constraint - a corner, behind a sofa, under a desk - Revel Concerta B8 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.