In this review, we will be comparing Stratton 12 and ProSub 1000, two Powered Subwoofer speakers from KLH and Definitive Technology. 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 KLH Stratton 12 and Definitive ProSub 1000 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 KLH Stratton 12and Definitive ProSub 1000 have a single woofer setup however the KLH Stratton 12's woofer is 12-inch whereas the Definitive ProSub 1000 features a 10-inch woofer.
Frequency Response
Stratton 12 has a frequency range of 25-160 Hz whereas ProSub 1000 has a frequency range of 18-150 Hz. With a minimum frequency of 18Hz, the ProSub 1000 can go significantly deeper on the low side and provide stronger bass compared to the Stratton 12'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 KLH Stratton 12 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 Definitive ProSub 1000 have Passive Radiator type enclosure. 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.
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 KLH Stratton 12's and Definitive ProSub 1000's external dimensions. KLH Stratton 12 has external dimensions of 450.0 x 391.0 x 518.0mm (17-11/16inch x 15-3/8inch x 20-3/8inch) whereas Definitive ProSub 1000 has external dimensions of 366.0 x 307.0 x 486.0mm (14-3/8 x 12-1/16 x 19-1/8inch).
KLH Stratton 12 is clearly the larger of the two speakers. Its body is 84mm wider, 84mm taller and 32mm deeper than Definitive ProSub 1000.
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 KLH Stratton 12 is approximately 2025.4cm2 / 313.9inch2 and base area of the Definitive ProSub 1000 is approximately 1492.0cm2 / 231.3inch2. The Stratton 12 requires 36% more surface area than the ProSub 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 KLH Stratton 12 weighs 20.00kg / 44lbs and the Definitive ProSub 1000 weighs 14.09kg / 31lbs. This makes the Stratton 12 42% heavier than the ProSub 1000.
Here is a comparison of how Stratton 12 and ProSub 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 KLH Stratton 12?
Here are the items that are included inside the box of Stratton 12:
- Powered subwoofer
- 6-feet AC power cord
- Grille
- Manual
What's in the Box of Definitive ProSub 1000?
Here are the items that come with the ProSub 1000:
- 10-inch Powered subwoofer
- Detachable grille (installed)
- 7-feet AC power cord
- Owners Manual
- Online Product Registration card
 Woofer Size |
12 inches
vs
10 inches
|
Larger woofer |
 High Frequency Response |
160 Hz
vs
150 Hz
|
Generates higher frequency |
| Low Frequency Response |
18 Hz
vs
25 Hz
|
Generates deeper bass |
 Height |
366mm
vs
450mm
|
Easier to fit in smaller spaces |
 Base Surface Area |
1492cm2
vs
2025cm2
|
Takes less floor space |
 Price per pair* |
499USD
vs
599USD
|
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.
KLH Stratton 12 needs about 36% more floor area. KLH Stratton 12 stands 32mm further into the room. KLH Stratton 12 is 84mm taller.
| General |
KLH Stratton 12 |
Definitive Technology ProSub 1000 |
| Brand |
KLH |
Definitive Technology |
| Speaker Type |
Powered Subwoofer |
Powered Subwoofer |
| Max Amplifier Output |
200 watts |
300 watts |
| Frequency Response |
25-160 Hz |
18-150 Hz |
Amplifier |
|
|
| Watts RMS (Continuous) |
200-watt RMS |
300-watt RMS |
Drivers |
|
|
| Woofer Quantity |
1 |
1 |
| Woofer Size |
12" |
10" |
| Woofer Composition |
Paper/Kevlar/Fiberglass |
Polymer |
| Tweeter Size |
- |
- |
| Aimable Tweeter |
No |
No |
| Midrange Driver |
No |
No |
| Crossover Frequency |
n/a |
40-150 Hz and 80 Hz |
| Firing Direction |
front |
front |
Physical Specs |
|
|
| Height |
450.0mm (17.7") |
366.0mm (14.4") |
| Width |
391.0mm (15.4") |
307.0mm (12.1") |
| Depth |
518.0mm (20.4") |
486.0mm (19.1") |
| Weight |
20.00kg (44lbs) |
14.09kg (31lbs) |
| Enclosure |
Bass Reflex |
Passive Radiator |
| Grille |
Yes |
Yes |
| Moisture Resistancy |
No |
No |
Connections |
|
|
Other |
|
|
| Parts Warranty |
2 Years |
3 Years |
| Labor Warranty |
2 Years |
3 Years |
A ported subwoofer against a passive radiator one. That is the most consequential line on this page: it decides how the bass rolls off, how it behaves in a small room, and how much output you get for the size of the box.
| Area | Better | Why |
|---|
| Bass depth | B | Definitive ProSub 1000 goes deeper - 18Hz 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 | Definitive ProSub 1000 has the bigger amplifier - 300W against 200W RMS, about 1.8dB more on tap. In a large room that is headroom before the DSP starts limiting. |
| Driver area | A | KLH Stratton 12 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 | depends | KLH Stratton 12 is ported - a ported box gives more output low down for its size, at the cost of a steeper roll-off below tuning; Definitive ProSub 1000 is passive radiator - a passive radiator behaves like a port without the pipe noise, and suits a slim cabinet. Neither is better in the abstract; ported tends to suit films and sealed tends to suit music, and both generalisations have exceptions. |
| Speaker-level inputs | B | Definitive ProSub 1000 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. |
| Phase control | A | KLH Stratton 12 has a phase control. Without one, the only way to fix a cancellation at the crossover is to move the box. |
| Cabinet size | depends | Definitive ProSub 1000 is about 40% 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 | B | Definitive ProSub 1000 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 | B | Definitive ProSub 1000 costs less - $499 against $599, about 17% less. |
A KLH Stratton 12 B Definitive ProSub 1000
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?
Definitive ProSub 1000 is the easier recommendation: it leads on most of the measured areas and costs less. Take KLH Stratton 12 if one of the "depends" rows describes your room. Check your amplifier first: if it has no subwoofer or preamp output, Definitive ProSub 1000 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 - Definitive ProSub 1000 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.