In this review, we will be comparing SuperSub XXL and Monitor XT12, two Powered Subwoofer speakers from GoldenEar and Polk Audio. 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 XXL and Polk Monitor XT12 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 XXL and Polk Monitor XT12 have a totally different setup: the GoldenEar SuperSub XXL features 2 x 12-inch drivers whereas the Monitor XT12 features 1 x 12-inch drivers.
Frequency Response
SuperSub XXL has a frequency range of 10-250 Hz whereas Monitor XT12 has a frequency range of 24-160 Hz. With a minimum frequency of 10Hz, the SuperSub XXL can go significantly deeper on the low side and provide stronger bass compared to the Monitor XT12's min frequency of 24Hz.
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 XXL 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 Polk Monitor XT12 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 XXL's and Polk Monitor XT12's external dimensions. GoldenEar SuperSub XXL has external dimensions of 447.0 x 485.0 x 434.0mm (17-9/16inch x 19-1/16inch x 17-1/16inch) whereas Polk Monitor XT12 has external dimensions of 418.0 x 408.0 x 485.0mm (16-7/16inch x 16-1/16inch x 19-1/16inch).
Polk Monitor XT12 is 77mm narrower and 29mm shorter than GoldenEar SuperSub XXL but it is also 51mm deeper.
Below you can see the front view size comparison of GoldenEar SuperSub XXL and Polk Monitor XT12 in scale.
Comparison image of GoldenEar SuperSub XXL and Polk Monitor XT12 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 XXL is approximately 2104.9cm2 / 326.3inch2 and base area of the Polk Monitor XT12 is approximately 1978.8cm2 / 306.7inch2. The SuperSub XXL requires 6% more surface area than the Monitor XT12 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 GoldenEar SuperSub XXL weighs 37.27kg / 82lbs and the Polk Monitor XT12 weighs 17.73kg / 39lbs. This makes the SuperSub XXL 110% heavier than the Monitor XT12.
Here is a comparison of how SuperSub XXL and Monitor XT12'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 XXL?
Here are the items that are included inside the box of SuperSub XXL:
- Powered Subwoofer
- 10-feet AC power cord
- Owners Manual
What's in the Box of Polk Monitor XT12?
Here are the items that come with the Monitor XT12:
- Black powered subwoofer
- 6.5-feet AC power cord
- Grille
- Owners Manual
- Online registration card
 Number of Woofers |
2
vs
1
|
More woofers |
| Low Frequency Response |
10 Hz
vs
24 Hz
|
Generates deeper bass |
 High Frequency Response |
250 Hz
vs
160 Hz
|
Generates higher frequency |
 Passive Radiator |
two 13-inch x 15-inch
vs
None
|
Increases the bass performance |
 Height |
418mm
vs
447mm
|
Easier to fit in smaller spaces |
 Base Surface Area |
1978cm2
vs
2104cm2
|
Takes less floor space |
 Price per pair* |
399USD
vs
2499USD
|
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.
Near-identical footprints. Polk Monitor XT12 stands 51mm further into the room. GoldenEar SuperSub XXL is 29mm taller.
| General |
GoldenEar SuperSub XXL |
Polk Monitor XT12 |
| Brand |
GoldenEar |
Polk Audio |
| Speaker Type |
Powered Subwoofer |
Powered Subwoofer |
| Max Amplifier Output |
1600 watts |
50 watts |
| Frequency Response |
10-250 Hz |
24-160 Hz |
Amplifier |
|
|
| Watts RMS (Continuous) |
1600-watt RMS |
50-watt RMS |
Drivers |
|
|
| Woofer Quantity |
2 |
1 |
| Woofer Size |
12" |
12" |
| Woofer Composition |
Fiber |
Bi-laminate paper |
| Tweeter Size |
- |
- |
| Aimable Tweeter |
No |
No |
| Midrange Driver |
No |
No |
| Firing Direction |
side |
front |
Physical Specs |
|
|
| Height |
447.0mm (17.6") |
418.0mm (16.5") |
| Width |
485.0mm (19.1") |
408.0mm (16.1") |
| Depth |
434.0mm (17.1") |
485.0mm (19.1") |
| Weight |
37.27kg (82lbs) |
17.73kg (39lbs) |
| Enclosure |
Passive Radiator |
Bass Reflex |
| Grille |
n/a |
Yes |
| Moisture Resistancy |
No |
No |
Connections |
|
|
Other |
|
|
| Parts Warranty |
3 Years |
3 Years |
| Labor Warranty |
3 Years |
3 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 XXL goes deeper - 10Hz against 24Hz. 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 XXL has the bigger amplifier - 1600W against 50W RMS, about 15.1dB more on tap. In a large room that is headroom before the DSP starts limiting. |
| Driver area | A | GoldenEar SuperSub XXL moves more air: 2 x 12" against 12" is 2x the cone area, not the 1.41x the diameters suggest. More area means the same output with less excursion, and less distortion with it. |
| Enclosure | depends | GoldenEar SuperSub XXL is passive radiator - a passive radiator behaves like a port without the pipe noise, and suits a slim cabinet; Polk Monitor XT12 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. |
| Speaker-level inputs | B | Polk Monitor XT12 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 | B | Polk Monitor XT12 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 XXL fires side and Polk Monitor XT12 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. |
| Price | B | Polk Monitor XT12 costs less - $399 against $2,499, about 84% less. |
A GoldenEar SuperSub XXL B Polk Monitor XT12
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?
GoldenEar SuperSub XXL is ahead, but on only 1 of the measured areas, and it costs about 6.3x the price. Polk Monitor XT12 is the sensible buy unless your room is large enough to need the extra. Check your amplifier first: if it has no subwoofer or preamp output, Polk Monitor XT12 is the only one of these two you can connect at all. 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 $399 each, two Polk Monitor XT12 cost about $798 against $2,499 for one of the other, which is worth a thought.
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.