In this review, we will be comparing Thetis 340 and PB-1000 Pro, two Powered Subwoofer speakers from Triangle and SVS. 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 SVS PB-1000 Pro 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 Triangle Thetis 340and SVS PB-1000 Pro have a single woofer setup however the Triangle Thetis 340's woofer is 10-inch whereas the SVS PB-1000 Pro features a 12-inch woofer.
Frequency Response
Thetis 340 has a frequency range of 25-120 Hz whereas PB-1000 Pro has a frequency range of 17-260 Hz. With a minimum frequency of 17Hz, the PB-1000 Pro 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
Both Triangle Thetis 340 and SVS PB-1000 Pro 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.
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 Triangle Thetis 340's and SVS PB-1000 Pro'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 SVS PB-1000 Pro has external dimensions of 479.0 x 380.0 x 509.0mm (18-13/16inch x 15inch x 20-15/16inch).
SVS PB-1000 Pro is clearly the larger of the two speakers. Its body is 40mm wider, 99mm taller and 169mm deeper than Triangle Thetis 340.
Size, drawn to scale
Both speakers 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 surface and pushed back to the same wall, so the deeper one visibly sticks out further.
SVS PB-1000 Pro needs about 67% more floor or shelf area. SVS PB-1000 Pro is 169mm deeper, so it stands that much further out from the wall. SVS PB-1000 Pro is 99mm taller.
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 SVS PB-1000 Pro is approximately 1934.2cm2 / 299.8inch2. The Thetis 340 requires 40% less surface area than the PB-1000 Pro 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 SVS PB-1000 Pro weighs 19.30kg / 42.5lbs. This makes the PB-1000 Pro 20% heavier than the Thetis 340.
Here is a comparison of how Thetis 340 and PB-1000 Pro's weights compare with the average, max and min weights in Powered Subwoofer class.
Weight
All Subwoofer Speakers
 Height |
380mm
vs
479mm
|
Easier to fit in smaller spaces |
 Base Surface Area |
1156cm2
vs
1934cm2
|
Takes less floor space |
 Woofer Size |
12 inches
vs
10 inches
|
Larger woofer |
| Low Frequency Response |
17 Hz
vs
25 Hz
|
Generates deeper bass |
 High Frequency Response |
260 Hz
vs
120 Hz
|
Generates higher frequency |
 App-Based Control |
iOS,Android
vs
None
|
Control the speaker via an app |
 Price per pair* |
799USD
vs
825USD
|
costs less (*prices may change depending on the seller, location and time) |
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.
SVS PB-1000 Pro needs about 67% more floor area. SVS PB-1000 Pro stands 169mm further into the room. SVS PB-1000 Pro is 99mm taller.
| General |
Triangle Thetis 340 |
SVS PB-1000 Pro |
| Brand |
Triangle |
SVS |
| Speaker Type |
Powered Subwoofer |
Powered Subwoofer |
| Max Amplifier Output |
250 watts |
325 watts |
| Frequency Response |
25-120 Hz |
17-260 Hz |
Amplifier |
|
|
| Watts RMS (Continuous) |
250-watt RMS |
325-watt RMS |
| Watts Peak (Max) |
400-watt RMS |
820-watt RMS |
Drivers |
|
|
| Woofer Quantity |
1 |
1 |
| Woofer Size |
10" |
12" |
| Woofer Composition |
Paper composite |
Fiber-composite |
| Tweeter Size |
- |
- |
| Aimable Tweeter |
No |
No |
| Midrange Driver |
No |
No |
| Firing Direction |
n/a |
front |
Physical Specs |
|
|
| Height |
380.0mm (15") |
479.0mm (18.9") |
| Width |
340.0mm (13.4") |
380.0mm (15") |
| Depth |
340.0mm (13.4") |
509.0mm (20") |
| Weight |
16.10kg (35.4lbs) |
19.30kg (42.5lbs) |
| Enclosure |
Bass Reflex |
Bass Reflex |
| Available Colors |
n/a |
Black |
| Grille |
Yes |
Yes |
| Moisture Resistancy |
No |
No |
Connections |
|
|
Other |
|
|
| Parts Warranty |
5 Years |
5 Years |
| Labor Warranty |
5 Years |
5 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 | B | SVS PB-1000 Pro goes deeper - 17Hz against 25Hz. Under 20Hz is felt more than heard - the bottom of a pipe organ and the bottom of a film mix. |
| Amplifier power | B | SVS PB-1000 Pro has the bigger amplifier - 325W against 250W RMS, about 1.1dB more on tap. In a large room that is headroom before the DSP starts limiting. |
| Driver area | B | SVS PB-1000 Pro moves more air: 12" against 10" is 1.44x the cone area, not the 1.2x 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. |
| Driver placement | depends | Triangle Thetis 340 fires down and SVS PB-1000 Pro fires front. 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 | Triangle Thetis 340 is about 53% 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. |
| Price | evenly matched | Priced within a few per cent of each other. |
A Triangle Thetis 340 B SVS PB-1000 Pro
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?
SVS PB-1000 Pro 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 - Triangle Thetis 340 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.