In this review, we will be comparing RP-1200SW and Alpha S8, two Powered Subwoofer speakers from Klipsch and PSB. 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 Klipsch RP-1200SW and PSB Alpha S8 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 Klipsch RP-1200SWand PSB Alpha S8 have a single woofer setup however the Klipsch RP-1200SW's woofer is 12-inch whereas the PSB Alpha S8 features a 8-inch woofer.
Frequency Response
RP-1200SW has a frequency range of 16.5-138 Hz whereas Alpha S8 has a frequency range of 35-150 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 Alpha S8's min frequency of 35Hz.
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 Klipsch RP-1200SW and PSB Alpha S8 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 Klipsch RP-1200SW's and PSB Alpha S8's external dimensions. Klipsch RP-1200SW has external dimensions of 482.0 x 432.0 x 659.0mm (18-15/16inch x 17inch x 25-15/16inch) whereas PSB Alpha S8 has external dimensions of 318.0 x 293.0 x 413.0mm (12-1/2 x 11-1/2 x 16-1/4inch).
Klipsch RP-1200SW is clearly the larger of the two speakers. Its body is 139mm wider, 164mm taller and 246mm deeper than PSB Alpha S8.
Below you can see the front view size comparison of Klipsch RP-1200SW and PSB Alpha S8 in scale.
Comparison image of Klipsch RP-1200SW and PSB Alpha S8 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 Klipsch RP-1200SW is approximately 2846.9cm2 / 441.3inch2 and base area of the PSB Alpha S8 is approximately 1210.1cm2 / 187.6inch2. The RP-1200SW requires 135% more surface area than the Alpha S8 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 Klipsch RP-1200SW weighs 31.18kg / 68.6lbs and the PSB Alpha S8 weighs 9.55kg / 21lbs. This makes the RP-1200SW 226% heavier than the Alpha S8.
Here is a comparison of how RP-1200SW and Alpha S8's weights compare with the average, max and min weights in Powered Subwoofer class.
Weight
All Subwoofer Speakers
 Woofer Size |
12 inches
vs
8 inches
|
Larger woofer |
| Low Frequency Response |
17 Hz
vs
35 Hz
|
Generates deeper bass |
 Wireless Operation |
Optional
vs
No
|
Connect your subwoofer to your system wireless |
 High Frequency Response |
150 Hz
vs
138 Hz
|
Generates higher frequency |
 Height |
318mm
vs
482mm
|
Easier to fit in smaller spaces |
 Base Surface Area |
1210cm2
vs
2846cm2
|
Takes less floor space |
 Price per pair* |
549USD
vs
1100USD
|
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 135% more floor area. Klipsch RP-1200SW stands 246mm further into the room. Klipsch RP-1200SW is 164mm taller.
| General |
Klipsch Reference Premiere RP-1200SW |
PSB Alpha S8 |
| Brand |
Klipsch |
PSB |
| Speaker Type |
Powered Subwoofer |
Powered Subwoofer |
| Max Amplifier Output |
400 watts |
150 watts |
| Frequency Response |
16.5-138 Hz |
35-150 Hz |
Amplifier |
|
|
| Watts RMS (Continuous) |
400-watt RMS |
150-watt RMS |
| Watts Peak (Max) |
800-watt RMS |
n/a |
Drivers |
|
|
| Woofer Quantity |
1 |
1 |
| Woofer Size |
12" |
8" |
| Woofer Composition |
Cerametallic |
Polypropylene |
| Tweeter Size |
- |
- |
| Aimable Tweeter |
No |
No |
| Midrange Driver |
No |
No |
| Firing Direction |
front |
front |
Physical Specs |
|
|
| Height |
482.0mm (19") |
318.0mm (12.5") |
| Width |
432.0mm (17") |
293.0mm (11.5") |
| Depth |
659.0mm (25.9") |
413.0mm (16.3") |
| Weight |
31.18kg (68.6lbs) |
9.55kg (21lbs) |
| Enclosure |
Bass Reflex |
Bass Reflex |
| Finish |
MDF with Vinyl |
n/a |
| Available Colors |
Ebony |
n/a |
| Grille |
Yes |
Yes |
| Moisture Resistancy |
No |
No |
Connections |
|
|
Other |
|
|
| Parts Warranty |
5 years |
1 Year |
| Labor Warranty |
5 years |
1 Year |
Two quite different sizes of subwoofer. Room volume decides this more than anything else on the page: a big driver in a small room is wasted, and a small one in a large room is worked to death.
| Area | Better | Why |
|---|
| Bass depth | A | Klipsch RP-1200SW goes deeper - 17Hz against 35Hz. Under 20Hz is felt more than heard - the bottom of a pipe organ and the bottom of a film mix. |
| Amplifier power | A | Klipsch RP-1200SW has the bigger amplifier - 400W against 150W RMS, about 4.3dB more on tap. In a large room that is headroom before the DSP starts limiting. |
| Driver area | A | Klipsch RP-1200SW moves more air: 12" against 8" is 2.25x the cone area, not the 1.5x 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. |
| Wireless option | depends | Only Klipsch RP-1200SW offers a wireless link (as a paid option). It decides where the sub can go if you cannot run a cable, and is worth nothing if you can. |
| Cabinet size | depends | PSB Alpha S8 is about 72% 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 | A | Klipsch RP-1200SW carries 5 years on parts against 1 years. A subwoofer amplifier works harder than anything else in the system, so this is not a throwaway line. |
| Price | B | PSB Alpha S8 costs less - $549 against $1,100, about 50% less. |
A Klipsch RP-1200SW B PSB Alpha S8
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?
The usual trade-off: Klipsch RP-1200SW measures better, PSB Alpha S8 costs about 50% less. In a normal room, placement will make a bigger difference than the gap between these two. 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 $549 each, two PSB Alpha S8 cost about $1,098 against $1,100 for one of the other, which is worth a thought. If placement is the constraint - a corner, behind a sofa, under a desk - PSB Alpha S8 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.