In this review, we will be comparing Thetis 340 and R-121SW, two Powered Subwoofer speakers from Triangle 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 Triangle Thetis 340 and Klipsch R-121SW first before getting into our more detailed comparison.
In the following sections, we will get into details in order to better understand how the Triangle Thetis 340 and Klipsch R-121SW compare and hopefully end up with enough arguments to decide which one of these subwoofers is the better choice for you.
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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 Triangle Thetis 340and Klipsch R-121SW have a single woofer setup however the Triangle Thetis 340's woofer is 10-inch whereas the Klipsch R-121SW features a 12-inch woofer.
Frequency Response
Thetis 340 has a frequency range of 25-120 Hz whereas R-121SW has a frequency range of 28-120 Hz. With a minimum frequency of 25Hz, the Thetis 340 can go slightly deeper then the R-121SW's min frequency of 28Hz.
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 Triangle Thetis 340 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
Size of a speaker can sometimes become an important decision factor due to space constraints or in some cases purely for esthetic reasons. In this section, we are going to compare Triangle Thetis 340's and Klipsch R-121SW's external dimensions. Triangle Thetis 340 has external dimensions of 380.0 x 340.0 x 340.0mm ( 14-15/16 x 13-3/8 x 13-3/8inch) 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 67mm wider, 43mm taller and 192mm deeper than Triangle Thetis 340.
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 Triangle Thetis 340 is approximately 1156.0cm2 / 179.2inch2 and base area of the Klipsch R-121SW is approximately 2165.2cm2 / 335.6inch2. The Thetis 340 requires 47% 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 Triangle Thetis 340 weighs 16.10kg / 35.4lbs and the Klipsch R-121SW weighs 16.00kg / 35.2lbs. This makes the Thetis 340 1% heavier than the R-121SW.
Here is a comparison of how Thetis 340 and R-121SW's weights compare with the average, max and min weights in Powered Subwoofer class.
Weight
All Subwoofer Speakers
 Low Frequency Response |
25 Hz
vs
28 Hz
|
Generates deeper bass |
 Height |
380mm
vs
423mm
|
Easier to fit in smaller spaces |
 Base Surface Area |
1156cm2
vs
2165cm2
|
Takes less floor space |
| Woofer Size |
12 inches
vs
10 inches
|
Larger woofer |
 Price per pair* |
599USD
vs
825USD
|
costs less (*prices may change depending on the seller, location and time) |
| General |
Triangle Thetis 340 |
Klipsch Reference R-121SW |
| Brand |
Triangle |
Klipsch |
| Speaker Type |
Powered Subwoofer |
Powered Subwoofer |
| Max Amplifier Output |
250 watts |
200 watts |
| Frequency Response |
25-120 Hz |
28-120 Hz |
Amplifier |
|
|
| Watts RMS (Continuous) |
250-watt RMS |
200-watt RMS |
| Watts Peak (Max) |
400-watt RMS |
n/a |
Drivers |
|
|
| Woofer Quantity |
1 |
1 |
| Woofer Size |
10" |
12" |
| Woofer Composition |
Paper composite |
Spun-Copper TCP |
| Tweeter Size |
- |
- |
| Aimable Tweeter |
No |
No |
| Midrange Driver |
No |
No |
| Firing Direction |
n/a |
front |
Physical Specs |
|
|
| Height |
380.0mm (15") |
423.0mm (16.7") |
| Width |
340.0mm (13.4") |
407.0mm (16") |
| Depth |
340.0mm (13.4") |
532.0mm (20.9") |
| Weight |
16.10kg (35.4lbs) |
16.00kg (35.2lbs) |
| Enclosure |
Bass Reflex |
Bass Reflex |
| Grille |
Yes |
Yes |
| Moisture Resistancy |
No |
No |
Connections |
|
|
Other |
|
|
| Parts Warranty |
5 Years |
2 Years |
| Labor Warranty |
5 Years |
2 Years |