In this review, we will be comparing Defiance V8 and R-121SW, two Powered Subwoofer speakers from Paradigm 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 Paradigm Defiance V8 and Klipsch R-121SW 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 Paradigm Defiance V8and Klipsch R-121SW have a single woofer setup however the Paradigm Defiance V8's woofer is 8-inch whereas the Klipsch R-121SW features a 12-inch woofer.
Frequency Response
Defiance V8 has a frequency range of 34-200 Hz whereas R-121SW has a frequency range of 28-120 Hz. With a minimum frequency of 28Hz, the R-121SW can go significantly deeper on the low side and provide stronger bass compared to the Defiance V8'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
Both Paradigm Defiance V8 and Klipsch R-121SW 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.
Klipsch R-121SW Port
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 Paradigm Defiance V8's and Klipsch R-121SW's external dimensions. Paradigm Defiance V8 has external dimensions of 361.0 x 326.0 x 399.0mm (14-3/16inch x 12-13/16inch x 15-11/16inch) whereas Klipsch R-121SW has external dimensions of 423.0 x 407.0 x 532.0mm (16-5/8inch x 16inch x 20-15/16inch).
Klipsch R-121SW is clearly the larger of the two speakers. Its body is 81mm wider, 62mm taller and 133mm deeper than Paradigm Defiance V8.
Below you can see the front view size comparison of Paradigm Defiance V8 and Klipsch R-121SW in scale.
Comparison image of Paradigm Defiance V8 and Klipsch R-121SW 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 Paradigm Defiance V8 is approximately 1300.7cm2 / 201.6inch2 and base area of the Klipsch R-121SW is approximately 2165.2cm2 / 335.6inch2. The Defiance V8 requires 40% less surface area than the R-121SW 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 Paradigm Defiance V8 weighs 12.05kg / 26.5lbs and the Klipsch R-121SW weighs 16.00kg / 35.2lbs. This makes the R-121SW 33% heavier than the Defiance V8.
Here is a comparison of how Defiance V8 and R-121SW's weights compare with the average, max and min weights in Powered Subwoofer class.
Weight
All Subwoofer Speakers
What's in the Box of Paradigm Defiance V8?
Here are the items that are included inside the box of Defiance V8:
- Powered subwoofer
- Grille
- 6.5-feetAC power cord
- Owners Manual
- Online Registration Card
- Important Unboxing Information
What's in the Box of Klipsch R-121SW?
Here are the items that come with the R-121SW:
- Powered subwoofer
- Grille
- 6.5-feet AC power cord
- User Manual
- Important Safety Instructions
- Warranty Information
 High Frequency Response |
200 Hz
vs
120 Hz
|
Generates higher frequency |
 Height |
361mm
vs
423mm
|
Easier to fit in smaller spaces |
 Base Surface Area |
1300cm2
vs
2165cm2
|
Takes less floor space |
 Price per pair* |
480USD
vs
599USD
|
costs less (*prices may change depending on the seller, location and time) |
 Woofer Size |
12 inches
vs
8 inches
|
Larger woofer |
| Low Frequency Response |
28 Hz
vs
34 Hz
|
Generates deeper bass |
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-121SW needs about 66% more floor area. Klipsch R-121SW stands 133mm further into the room. Klipsch R-121SW is 62mm taller.
| General |
Paradigm Defiance V8 |
Klipsch Reference R-121SW |
| Brand |
Paradigm |
Klipsch |
| Speaker Type |
Powered Subwoofer |
Powered Subwoofer |
| Max Amplifier Output |
75 watts |
200 watts |
| Frequency Response |
34-200 Hz |
28-120 Hz |
Amplifier |
|
|
| Watts RMS (Continuous) |
75-watt RMS |
200-watt RMS |
Drivers |
|
|
| Woofer Quantity |
1 |
1 |
| Woofer Size |
8" |
12" |
| Woofer Composition |
Carbon-loaded polypropylene |
Spun-Copper TCP |
| Tweeter Size |
- |
- |
| Aimable Tweeter |
No |
No |
| Midrange Driver |
No |
No |
| Firing Direction |
front |
front |
Physical Specs |
|
|
| Height |
361.0mm (14.2") |
423.0mm (16.7") |
| Width |
326.0mm (12.8") |
407.0mm (16") |
| Depth |
399.0mm (15.7") |
532.0mm (20.9") |
| Weight |
12.05kg (26.5lbs) |
16.00kg (35.2lbs) |
| Enclosure |
Bass Reflex |
Bass Reflex |
| Grille |
Yes |
Yes |
| Moisture Resistancy |
No |
No |
Connections |
|
|
Other |
|
|
| Parts Warranty |
3 Years |
2 Years |
| Labor Warranty |
3 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 | B | Klipsch R-121SW goes deeper - 28Hz against 34Hz. A real difference, though most music has little content below 34Hz. |
| Amplifier power | B | Klipsch R-121SW has the bigger amplifier - 200W against 75W RMS, about 4.3dB more on tap. In a large room that is headroom before the DSP starts limiting. |
| Driver area | B | Klipsch R-121SW moves more air: 12" against 8" is 2.25x the cone area, not the 1.5x 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. |
| Speaker-level inputs | A | Paradigm Defiance V8 takes a speaker-level connection as well as line level. That is what lets it work with an integrated amplifier or a vintage receiver that has no subwoofer output at all. |
| Cabinet size | depends | Paradigm Defiance V8 is about 49% 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 | Paradigm Defiance V8 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 | Paradigm Defiance V8 costs less - $480 against $599, about 20% less. |
A Paradigm Defiance V8 B Klipsch R-121SW
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: Klipsch R-121SW measures better, Paradigm Defiance V8 costs about 20% less. In a normal room, placement will make a bigger difference than the gap between these two. Check your amplifier first: if it has no subwoofer or preamp output, Paradigm Defiance V8 is the only one of these two you can connect at all. If placement is the constraint - a corner, behind a sofa, under a desk - Paradigm Defiance V8 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.