In this review, we will be comparing T 9x SE and RP-1200SW, two Powered Subwoofer speakers from REL 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 REL T 9x SE and Klipsch RP-1200SW 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 REL T 9x SEand Klipsch RP-1200SW have a single woofer setup however the REL T 9x SE's woofer is 10-inch whereas the Klipsch RP-1200SW features a 12-inch woofer.
Frequency Response
T 9x SE has a frequency range of 27-120 Hz whereas RP-1200SW has a frequency range of 16.5-138 Hz. With a minimum frequency of 17Hz, the RP-1200SW can go significantly deeper on the low side and provide stronger bass compared to the T 9x SE's min frequency of 27Hz.
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
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 REL T 9x SE's and Klipsch RP-1200SW's external dimensions. REL T 9x SE has external dimensions of 344.5 x 371.5 x 465.1mm () whereas Klipsch RP-1200SW has external dimensions of 482.0 x 432.0 x 659.0mm (18-15/16inch x 17inch x 25-15/16inch).
Klipsch RP-1200SW is clearly the larger of the two speakers. Its body is 60.5mm wider, 137.5mm taller and 193.9mm deeper than REL T 9x SE.
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 REL T 9x SE is approximately 1727.8cm2 / 267.8inch2 and base area of the Klipsch RP-1200SW is approximately 2846.9cm2 / 441.3inch2. The T 9x SE requires 39% less surface area than the RP-1200SW 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 REL T 9x SE weighs 20.64kg / 45.4lbs and the Klipsch RP-1200SW weighs 31.18kg / 68.6lbs. This makes the RP-1200SW 51% heavier than the T 9x SE.
Here is a comparison of how T 9x SE and RP-1200SW's weights compare with the average, max and min weights in Powered Subwoofer class.
Weight
All Subwoofer Speakers
 Height |
344mm
vs
482mm
|
Easier to fit in smaller spaces |
 Base Surface Area |
1727cm2
vs
2846cm2
|
Takes less floor space |
 Woofer Size |
12 inches
vs
10 inches
|
Larger woofer |
| Low Frequency Response |
17 Hz
vs
27 Hz
|
Generates deeper bass |
 High Frequency Response |
138 Hz
vs
120 Hz
|
Generates higher frequency |
 Price per pair* |
1100USD
vs
1799USD
|
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.
Klipsch RP-1200SW needs about 65% more floor area. Klipsch RP-1200SW stands 194mm further into the room. Klipsch RP-1200SW is 138mm taller.
| General |
REL T 9x SE |
Klipsch Reference Premiere RP-1200SW |
| Brand |
REL |
Klipsch |
| Speaker Type |
Powered Subwoofer |
Powered Subwoofer |
| Frequency Response |
27-120 Hz |
16.5-138 Hz |
Amplifier |
|
|
| Watts RMS (Continuous) |
300-watt RMS |
400-watt RMS |
| Watts Peak (Max) |
n/a |
800-watt RMS |
Drivers |
|
|
| Woofer Quantity |
1 |
1 |
| Woofer Size |
10" |
12" |
| Woofer Composition |
|
Cerametallic |
| Tweeter Size |
- |
- |
| Aimable Tweeter |
No |
No |
| Midrange Driver |
No |
No |
| Firing Direction |
n/a |
front |
Physical Specs |
|
|
| Height |
344.5mm (13.6") |
482.0mm (19") |
| Width |
371.5mm (14.6") |
432.0mm (17") |
| Depth |
465.1mm (18.3") |
659.0mm (25.9") |
| Weight |
20.64kg (45.4lbs) |
31.18kg (68.6lbs) |
| Enclosure |
|
Bass Reflex |
| Finish |
n/a |
MDF with Vinyl |
| Available Colors |
n/a |
Ebony |
| Grille |
n/a |
Yes |
| Moisture Resistancy |
No |
No |
Connections |
|
|
Other |
|
|
| Parts Warranty |
3 Years |
5 years |
| Labor Warranty |
3 Years |
5 years |
A passive radiator subwoofer against a ported 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 | Klipsch RP-1200SW goes deeper - 17Hz against 27Hz. Under 20Hz is felt more than heard - the bottom of a pipe organ and the bottom of a film mix. |
| Amplifier power | B | Klipsch RP-1200SW has the bigger amplifier - 400W against 300W RMS, about 1.2dB more on tap. In a large room that is headroom before the DSP starts limiting. |
| Driver area | B | Klipsch RP-1200SW 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 | REL T 9x SE is passive radiator - a passive radiator behaves like a port without the pipe noise, and suits a slim cabinet; Klipsch RP-1200SW is ported - a ported box gives more output low down for its size, at the cost of a steeper roll-off below tuning. Neither is better in the abstract; ported tends to suit films and sealed tends to suit music, and both generalisations have exceptions. |
| Cabinet size | depends | REL T 9x SE is about 57% 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 | Klipsch RP-1200SW carries 5 years on parts against 3 years. A subwoofer amplifier works harder than anything else in the system, so this is not a throwaway line. |
| Price | B | Klipsch RP-1200SW costs less - $1,100 against $1,799, about 39% less. |
A REL T 9x SE B Klipsch RP-1200SW
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?
Klipsch RP-1200SW is the easier recommendation: it leads on most of the measured areas and costs less. Take REL T 9x SE if one of the "depends" rows describes your room. Two small subwoofers beat one big one in most rooms - a pair evens out the room modes in a way no single box can, whatever its specs. At $1,100 each, two Klipsch RP-1200SW cost about $2,200 against $1,799 for one of the other, which is worth a thought. If placement is the constraint - a corner, behind a sofa, under a desk - REL T 9x SE 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.