In this review, we will be comparing Descend DN15 and PB-1000, two Powered Subwoofer speakers from Definitive Technology 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 Definitive DN15 and SVS PB-1000 first before getting into our more detailed comparison.
In the following sections, we will get into details in order to better understand how the Definitive DN15 and SVS PB-1000 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 Definitive DN15and SVS PB-1000 have a single woofer setup however the Definitive DN15's woofer is 15-inch whereas the SVS PB-1000 features a 10-inch woofer.
Frequency Response
Descend DN15 has a frequency range of 20-150 Hz whereas PB-1000 has a frequency range of 19-270 Hz. With a minimum frequency of 19Hz, the PB-1000 can go slightly deeper then the Descend DN15's min frequency of 20Hz.
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 Definitive DN15 has a Passive Radiator type cabinet. Passive Radiator type subwoofers sports a non-powered cone that moves in response to the main woofer to move air out in order to generate stronger bass in a smaller body compared to ported or sealed designs. On the other hand the SVS PB-1000 have Bass Reflex type enclosure. 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
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 Definitive DN15's and SVS PB-1000's external dimensions. Definitive DN15 has external dimensions of 634.0 x 596.0 x 640.0mm ( 24-15/16inch x 23-7/16inch x 25-3/16inch ) whereas SVS PB-1000 has external dimensions of 480.0 x 381.0 x 532.0mm ( 18-7/8 x 15 x 20-15/16inch) .
Definitive DN15 is clearly the larger of the two speakers. Its body is 215mm wider, 154mm taller and 108mm deeper than SVS PB-1000.
Below you can see the front view size comparison of Definitive DN15 and SVS PB-1000 in scale.
Comparison image of Definitive DN15 and SVS PB-1000 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 Definitive DN15 is approximately 3814.4cm2 / 591.2inch2 and base area of the SVS PB-1000 is approximately 2026.9cm2 / 314.2inch2. The Descend DN15 requires 88% more surface area than the PB-1000 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 Definitive DN15 weighs 52.09kg / 114.6lbs and the SVS PB-1000 weighs 20.91kg / 46lbs. This makes the Descend DN15 149% heavier than the PB-1000.
Here is a comparison of how Descend DN15 and PB-1000's weights compare with the average, max and min weights in Powered Subwoofer class.
Weight
All Subwoofer Speakers
What's in the Box of Definitive DN15?
Here are the items that are included inside the box of Descend DN15:
Powered subwoofer6-feet AC power cordRemote controlCR2032 3V battery (pre-installed in remote)Owners Manual
What's in the Box of SVS PB-1000?
Here are the items that come with the PB-1000:
Powered subwooferGrille (installed)6-feet AC power cordOwners ManualImportant Safety Instructions
 Woofer Size |
15 inches
vs
10 inches
|
Larger woofer |
 Passive Radiator |
2 x 15-inch
vs
None
|
Increases the bass performance |
| Low Frequency Response |
19 Hz
vs
20 Hz
|
Generates deeper bass |
 High Frequency Response |
270k Hz
vs
150k Hz
|
Generates higher frequency |
 Height |
480mm
vs
634mm
|
Easier to fit in smaller spaces |
 Base Surface Area |
2026cm2
vs
3814cm2
|
Takes less floor space |
 Price per pair* |
499USD
vs
1799USD
|
costs less (*prices may change depending on the seller, location and time) |
| General |
Definitive Technology Descend DN15 |
SVS PB-1000 |
| Brand |
Definitive Technology |
SVS |
| Speaker Type |
Powered Subwoofer |
Powered Subwoofer |
| Max Amplifier Output |
500 watts |
300 watts |
| Frequency Response |
20-150 Hz |
19-270 Hz |
Amplifier |
|
|
| Watts RMS (Continuous) |
500-watt RMS |
300-watt RMS |
Drivers |
|
|
| Woofer Quantity |
1 |
1 |
| Woofer Size |
15" |
10" |
| Woofer Composition |
Polypropylene |
Fiber-composite |
| Tweeter Size |
- |
- |
| Aimable Tweeter |
No |
No |
| Midrange Driver |
No |
No |
| Crossover Frequency |
n/a |
50-160 Hz and 80 Hz |
| Firing Direction |
front |
front |
Physical Specs |
|
|
| Height |
634.0mm (25") |
480.0mm (18.9") |
| Width |
596.0mm (23.5") |
381.0mm (15") |
| Depth |
640.0mm (25.2") |
532.0mm (20.9") |
| Weight |
52.09kg (114.6lbs) |
20.91kg (46lbs) |
| Enclosure |
Passive Radiator |
Bass Reflex |
| Grille |
n/a |
Yes |
| Moisture Resistancy |
No |
No |
Connections |
|
|
Other |
|
|
| Parts Warranty |
3 Years |
5 Years |
| Labor Warranty |
3 Years |
5 Years |