In this review, we will be comparing Monitor XT12 and HTS 12, two Powered Subwoofer speakers by 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 Polk Monitor XT12 and Polk HTS 12 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.Polk Monitor XT12and Polk HTS 12 have the same driver set up: Both subwoofers have 1 x 12" drivers.
Frequency Response
Monitor XT12 has a frequency range of 24-160 Hz whereas HTS 12 has a frequency range of 28-120 Hz. With a minimum frequency of 24Hz, the Monitor XT12 can go slightly deeper then the HTS 12's min frequency of 28Hz.
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 Polk Monitor XT12 and Polk HTS 12 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.
Polk HTS 12 Port
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 Polk Monitor XT12's and Polk HTS 12's external dimensions. 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) whereas Polk HTS 12 has external dimensions of 478.0 x 437.0 x 510.0mm (18-13/16 x 17-3/16 x 20-1/16inch).
Polk HTS 12 is clearly the larger of the two speakers. Its body is 29mm wider, 60mm taller and 25mm deeper than Polk Monitor XT12.
Below you can see the front view size comparison of Polk Monitor XT12 and Polk HTS 12 in scale.
Comparison image of Polk Monitor XT12 and Polk HTS 12 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 Polk Monitor XT12 is approximately 1978.8cm2 / 306.7inch2 and base area of the Polk HTS 12 is approximately 2228.7cm2 / 345.4inch2. The Monitor XT12 requires 11% less surface area than the HTS 12 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 Polk Monitor XT12 weighs 17.73kg / 39lbs and the Polk HTS 12 weighs 22.68kg / 49.9lbs. This makes the HTS 12 28% heavier than the Monitor XT12.
Here is a comparison of how Monitor XT12 and HTS 12's weights compare with the average, max and min weights in Powered Subwoofer class.
Weight
All Subwoofer Speakers
What's in the Box of Polk Monitor XT12?
Here are the items that are included inside the box of Monitor XT12:
- Black powered subwoofer
- 6.5-feet AC power cord
- Grille
- Owners Manual
- Online registration card
What's in the Box of Polk HTS 12?
Here are the items that come with the HTS 12:
- Powered subwoofer
- Grille
- 8-feet AC power cord
- Owners Manual
- Online Product Registration sheet
 Low Frequency Response |
24 Hz
vs
28 Hz
|
Generates deeper bass |
 High Frequency Response |
160 Hz
vs
120 Hz
|
Generates higher frequency |
 Height |
418mm
vs
478mm
|
Easier to fit in smaller spaces |
 Base Surface Area |
1978cm2
vs
2228cm2
|
Takes less floor space |
 Price per pair* |
399USD
vs
549USD
|
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.
Polk HTS 12 needs about 13% more floor area. Polk HTS 12 stands 25mm further into the room. Polk HTS 12 is 60mm taller.
| General |
Polk Monitor XT12 |
Polk Audio HTS 12 |
| Brand |
Polk Audio |
Polk Audio |
| Speaker Type |
Powered Subwoofer |
Powered Subwoofer |
| Max Amplifier Output |
50 watts |
200 watts |
| Frequency Response |
24-160 Hz |
28-120 Hz |
Amplifier |
|
|
| Watts RMS (Continuous) |
50-watt RMS |
200-watt RMS |
| Watts Peak (Max) |
n/a |
400-watt RMS |
Drivers |
|
|
| Woofer Quantity |
1 |
1 |
| Woofer Size |
12" |
12" |
| Woofer Composition |
Bi-laminate paper |
Polypropylene |
| Tweeter Size |
- |
- |
| Aimable Tweeter |
No |
No |
| Midrange Driver |
No |
No |
| Firing Direction |
front |
front |
Physical Specs |
|
|
| Height |
418.0mm (16.5") |
478.0mm (18.8") |
| Width |
408.0mm (16.1") |
437.0mm (17.2") |
| Depth |
485.0mm (19.1") |
510.0mm (20.1") |
| Weight |
17.73kg (39lbs) |
22.68kg (49.9lbs) |
| Enclosure |
Bass Reflex |
Bass Reflex |
| Grille |
Yes |
Yes |
| Moisture Resistancy |
No |
No |
Connections |
|
|
Other |
|
|
| Parts Warranty |
3 Years |
3 Years |
| Labor Warranty |
3 Years |
3 Years |
Both are Polk Audio, so the design approach is shared and the differences are mostly in output, size and price.
| Area | Better | Why |
|---|
| Bass depth | A | Polk Monitor XT12 goes deeper - 24Hz against 28Hz. A real difference, though most music has little content below 28Hz. |
| Amplifier power | B | Polk HTS 12 has the bigger amplifier - 200W against 50W RMS, about 6dB more on tap. In a large room that is headroom before the DSP starts limiting. |
| Driver area | evenly matched | Near-identical radiating area (12" against 12"). |
| Enclosure | evenly matched | Both are ported designs, so they roll off in much the same way. |
| Speaker-level inputs | A | 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. |
| Cabinet size | depends | Polk Monitor XT12 is about 22% 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. |
| Price | A | Polk Monitor XT12 costs less - $399 against $549, about 27% less. |
A Polk Monitor XT12 B Polk HTS 12
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?
Polk Monitor XT12 has the edge on paper, though not by much. The "depends" rows are more likely to decide this than the score is. 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.
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.