In this review, we will be comparing SuperSub X and SPL-150, two Powered Subwoofer speakers from GoldenEar 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 GoldenEar SuperSub X and Klipsch SPL-150 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.GoldenEar SuperSub X and Klipsch SPL-150 have a totally different setup: the GoldenEar SuperSub X features 2 x 8-inch drivers whereas the SPL-150 features 1 x 15-inch drivers.
Frequency Response
SuperSub X has a frequency range of 12-250 Hz whereas SPL-150 has a frequency range of 18-125 Hz. With a minimum frequency of 12Hz, the SuperSub X can go significantly deeper on the low side and provide stronger bass compared to the SPL-150's min frequency of 18Hz.
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 GoldenEar SuperSub X 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 Klipsch SPL-150 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
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 GoldenEar SuperSub X's and Klipsch SPL-150's external dimensions. GoldenEar SuperSub X has external dimensions of 324.0 x 356.0 x 388.0mm (12-3/4inch x 14inch x 15-1/4inch) whereas Klipsch SPL-150 has external dimensions of 547.0 x 496.0 x 604.0mm (21-1/2 x 19-1/2 x 23-3/4inch).
Klipsch SPL-150 is clearly the larger of the two speakers. Its body is 140mm wider, 223mm taller and 216mm deeper than GoldenEar SuperSub X.
Below you can see the front view size comparison of GoldenEar SuperSub X and Klipsch SPL-150 in scale.
Comparison image of GoldenEar SuperSub X and Klipsch SPL-150 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 GoldenEar SuperSub X is approximately 1381.3cm2 / 214.1inch2 and base area of the Klipsch SPL-150 is approximately 2995.8cm2 / 464.3inch2. The SuperSub X requires 54% less surface area than the SPL-150 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 GoldenEar SuperSub X weighs 18.18kg / 40lbs and the Klipsch SPL-150 weighs 34.27kg / 75.4lbs. This makes the SPL-150 89% heavier than the SuperSub X.
Here is a comparison of how SuperSub X and SPL-150's weights compare with the average, max and min weights in Powered Subwoofer class.
Weight
All Subwoofer Speakers
What's in the Box of GoldenEar SuperSub X?
Here are the items that are included inside the box of SuperSub X:
- Powered Subwoofer
- 10-feet AC power cord
- Owners Manual
What's in the Box of Klipsch SPL-150?
Here are the items that come with the SPL-150:
- Powered sub
- Grille
- 6.5-feet AC power cord
- User Manual
- Important Safety Instructions
- Warranty Information
 Number of Woofers |
2
vs
1
|
More woofers |
| Low Frequency Response |
12 Hz
vs
18 Hz
|
Generates deeper bass |
 High Frequency Response |
250 Hz
vs
125 Hz
|
Generates higher frequency |
 Passive Radiator |
two 10.5-inch x 9.5-inch
vs
None
|
Increases the bass performance |
 Height |
324mm
vs
547mm
|
Easier to fit in smaller spaces |
 Base Surface Area |
1381cm2
vs
2995cm2
|
Takes less floor space |
| Woofer Size |
15 inches
vs
8 inches
|
Larger woofer |
 Price per pair* |
1399USD
vs
1499USD
|
costs less (*prices may change depending on the seller, location and time) |
 Wireless Operation |
Optional
vs
No
|
Connect your subwoofer to your system wireless |
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 SPL-150 needs about 117% more floor area. Klipsch SPL-150 stands 216mm further into the room. Klipsch SPL-150 is 223mm taller.
| General |
GoldenEar SuperSub X |
Klipsch SPL-150 |
| Brand |
GoldenEar |
Klipsch |
| Speaker Type |
Powered Subwoofer |
Powered Subwoofer |
| Max Amplifier Output |
1400 watts |
400 watts |
| Frequency Response |
12-250 Hz |
18-125 Hz |
Amplifier |
|
|
| Watts RMS (Continuous) |
1400-watt RMS |
400-watt RMS |
Drivers |
|
|
| Woofer Quantity |
2 |
1 |
| Woofer Size |
8" |
15" |
| Woofer Composition |
Fiber |
Cerametallic |
| Tweeter Size |
- |
- |
| Aimable Tweeter |
No |
No |
| Midrange Driver |
No |
No |
| Firing Direction |
side |
front |
Physical Specs |
|
|
| Height |
324.0mm (12.8") |
547.0mm (21.5") |
| Width |
356.0mm (14") |
496.0mm (19.5") |
| Depth |
388.0mm (15.3") |
604.0mm (23.8") |
| Weight |
18.18kg (40lbs) |
34.27kg (75.4lbs) |
| Enclosure |
Passive Radiator |
Bass Reflex |
| Grille |
n/a |
Yes |
| Moisture Resistancy |
No |
No |
Connections |
|
|
Other |
|
|
| Parts Warranty |
3 Years |
2 Years |
| Labor Warranty |
3 Years |
2 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 | A | GoldenEar SuperSub X goes deeper - 12Hz against 18Hz. Under 20Hz is felt more than heard - the bottom of a pipe organ and the bottom of a film mix. |
| Amplifier power | A | GoldenEar SuperSub X has the bigger amplifier - 1400W against 400W RMS, about 5.4dB more on tap. In a large room that is headroom before the DSP starts limiting. |
| Driver area | B | Klipsch SPL-150 moves more air: 15" against 2 x 8" is 1.76x the cone area, not the 1.33x the diameters suggest. More area means the same output with less excursion, and less distortion with it. |
| Enclosure | depends | GoldenEar SuperSub X is passive radiator - a passive radiator behaves like a port without the pipe noise, and suits a slim cabinet; Klipsch SPL-150 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. |
| Wireless option | depends | Only Klipsch SPL-150 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. |
| Phase control | B | Klipsch SPL-150 has a phase control. Without one, the only way to fix a cancellation at the crossover is to move the box. |
| Driver placement | depends | GoldenEar SuperSub X fires side and Klipsch SPL-150 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 | GoldenEar SuperSub X is about 73% 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 | GoldenEar SuperSub X 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 | Klipsch SPL-150 costs less - $1,399 against $1,499, about 7% less. |
A GoldenEar SuperSub X B Klipsch SPL-150
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: GoldenEar SuperSub X measures better, Klipsch SPL-150 costs about 7% less. In a normal room, placement will make a bigger difference than the gap between these two. If placement is the constraint - a corner, behind a sofa, under a desk - GoldenEar SuperSub X 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.