In this review, we will be comparing Thetis 340 and KC62, two Powered Subwoofer speakers from Triangle and KEF. 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 KEF KC62 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 KEF KC62 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.Triangle Thetis 340 and KEF KC62 have a totally different setup: the Triangle Thetis 340 features 1 x 10-inch drivers whereas the KC62 features 2 x 6.5-inch drivers.
Frequency Response
Thetis 340 has a frequency range of 25-120 Hz whereas KC62 has a frequency range of 11-200 Hz. With a minimum frequency of 11Hz, the KC62 can go significantly deeper on the low side and provide stronger bass compared to the Thetis 340's min frequency of 25Hz.
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 Triangle Thetis 340 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 KEF KC62 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
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 KEF KC62'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 KEF KC62 has external dimensions of 245.0 x 258.0 x 281.0mm ( 9-5/8inch x 10-1/8inch x 11-1/16inch ) .
Triangle Thetis 340 is clearly the larger of the two speakers. Its body is 82mm wider, 135mm taller and 59mm deeper than KEF KC62.
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 KEF KC62 is approximately 725.0cm2 / 112.4inch2. The Thetis 340 requires 59% more surface area than the KC62 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 Triangle Thetis 340 weighs 16.10kg / 35.4lbs and the KEF KC62 weighs 14.05kg / 30.9lbs. This makes the Thetis 340 15% heavier than the KC62.
Here is a comparison of how Thetis 340 and KC62's weights compare with the average, max and min weights in Powered Subwoofer class.
Weight
All Subwoofer Speakers
 Woofer Size |
10 inches
vs
6.5 inches
|
Larger woofer |
 Price per pair* |
825USD
vs
1500USD
|
costs less (*prices may change depending on the seller, location and time) |
| Number of Woofers |
2
vs
1
|
More woofers |
| Low Frequency Response |
11 Hz
vs
25 Hz
|
Generates deeper bass |
 High Frequency Response |
200k Hz
vs
120k Hz
|
Generates higher frequency |
 Height |
245mm
vs
380mm
|
Easier to fit in smaller spaces |
 Base Surface Area |
725cm2
vs
1156cm2
|
Takes less floor space |
| General |
Triangle Thetis 340 |
KEF KC62 |
| Brand |
Triangle |
KEF |
| Speaker Type |
Powered Subwoofer |
Powered Subwoofer |
| Max Amplifier Output |
250 watts |
1000 watts |
| Frequency Response |
25-120 Hz |
11-200 Hz |
Amplifier |
|
|
| Watts RMS (Continuous) |
250-watt RMS |
1000-watt RMS |
| Watts Peak (Max) |
400-watt RMS |
n/a |
Drivers |
|
|
| Woofer Quantity |
1 |
2 |
| Woofer Size |
10" |
6.5" |
| Woofer Composition |
Paper composite |
|
| Tweeter Size |
- |
- |
| Aimable Tweeter |
No |
No |
| Midrange Driver |
No |
No |
| Firing Direction |
n/a |
side |
Physical Specs |
|
|
| Height |
380.0mm (15") |
245.0mm (9.6") |
| Width |
340.0mm (13.4") |
258.0mm (10.2") |
| Depth |
340.0mm (13.4") |
281.0mm (11.1") |
| Weight |
16.10kg (35.4lbs) |
14.05kg (30.9lbs) |
| Enclosure |
Bass Reflex |
Acoustic Suspension |
| Grille |
Yes |
n/a |
| Moisture Resistancy |
No |
No |
Connections |
|
|
Other |
|
|
| Parts Warranty |
5 Years |
2 Years |
| Labor Warranty |
5 Years |
2 Years |