Polk Monitor XT12 Subwoofer Review

4.33 Mixed Usages
4.4 Bass Extension:
4.3 Bass Accuracy:
4.4 Build Quality:
4.1 Dynamic Range:
4.5 Features:
4.4 Fit and Finish:
Release year: 2021 Rating: 4.7 Best for Small Room

Polk Monitor XT 12 powered subwoofer can deliver smooth and even bass that packs a punch. A 12” woofer driver can easily bring life in movies and music. Use the speaker grille to protect the driver and make sure to leave some room behind it. It delivers adequate punch needed to enjoy music and movies.

Our Verdict

Polk Monitor XT 12 is a great addition for bass heads. It comes with a 3-way power switch that includes Auto, on and off. With Auto option, the sub will turn on automatically once it detects any signal. The subwoofer is affordable and shows impressive performance.

  • Effortless bass
  • Full and rich sound
  • Sturdy built
  • Great value for money
  • Affordable
  • None
Where to buy



Subwoofer for Home Audio Yes
Subwoofer Type Powered Subwoofer
Subwoofer Variation Ported Subwoofer
Woofer Size (inches) 12 inches
Best Usage: Small Room
Amplifier Power Rating
Enclosure Bass Reflex


Power Handling(Peak): 100W
Power Handling(RMS): 50W
Frequency Response: none
Low Frequency Response:
Nominal Impedance: none
Sensitivity: none


RCA stereo line level inputs (pair): Yes
RCA Output: Yes
RCA LFE Input: Yes
XLR Outputs (pair):
XLR Inputs (pair):
Speaker level input (pair):
Speaker Level Output (pair):
Wireless: N/A
Connector Type: Spring clips


Woofer Quantity: 1
Woofer Size: 12-Inches
Woofer Composition: bi-laminate paper
Firing Direction: front-Firing Subwoofers
Enclosure: Ported
Amplifier Class: Class AB
Amplifier Output (watts): none


Bass Extension: It has good bass extension and can get as low as 24Hz
Bass Accuracy: Bass accuracy is amazing, the lows are deeper and punchier
Dynamic Range:
Power Handling: Good power handling
Frequency Response: Wide frequency response that goes as low as 24Hz
Transient Response:
Overall Performance: Impressive performance for movies and music


Low-Pass Crossover Freq: 80Hz–160
High-Pass Crossover Freq: none
Phase Switch: Yes
App Control: N/A
Remote: N/A


Height: 16.4
Width: 16
Depth: 17.9
Weight: 39lbs
Enclosure: MDF
Grille: magnetic cloth grille
Moisture Resistancy: none
Cabinet Material: MDF
Color Variation black


Accessories: 1 powered subwoofer, 6.5' AC power cord, Grille, Manual, Online registration card
User manual: Yes
Warranty: 3 years


Bass Extension: 4.38
Bass Accuracy: 4.27
Dynamic Range: 4.14
Features: 4.48
Build Quality: 4.37
Fit and Finish: 4.36
Where to buy

Details Review


Polk Monitor XT12 subwoofer has a front firing woofer. It has critically braced MDF cabinet and comes with a removable magnetic cloth grille. It has permanently installed feet and this low-resonant enclosure deliver clean and even bass.



The Polk Monitor XT12 is driven by Class AB amplifier. This highly efficient amplifier delivers clean and powerful performance. Low ends from this dynamically balanced 12” woofer is deeper and tighter. As a result, watching movies or listening to music is much more engaging. It can get as low as 24Hz, and this punch is adequate for bass heavy contents.

This bi-laminate woofer is surrounded by foam and is known to deliver accurate bass in all cases. When paired to a home theater, the movie effects and soundtracks become lively, immersive and room-filling. A rear port will boost the bass while ensuring there is minimum or no distortion. It will work with Dolby Atmos and DTS:X enabled receivers. It will work with 2.1, 3.1, 5.1, 7.1, and 9.1 home theater systems.


If you are using one Polk Monitor XT12 subwoofer, then you can begin by placing it on the front wall between the speakers on one side. Place sure to leave a gap of 6” from the wall. If you are using two subwoofers, then place it in one corner on the front wall. Then place the second one in the diagonally opposite corner of the room. Have a look at the user manual that gives clear instructions along with images.

Use case:

This Polk subwoofer can be used for movies, music and games. This 12" subwoofer is ideal for small to medium sized rooms. 



On the rear side the subwoofer has line level, LFE and binding posts for speaker. In terms of options, it has volume knob, low pass filter knob (80-160Hz), auto on/off switch and phase on/off switch. Once you use the volume to adjust sub level, the volume option in your receiver will adjust the speaker sound. In case the bass sounds boomy or muddy, toggle the phase switch to select 0 or 180.

Connect the amplifier or receiver to the line level input ports of the subwoofer. In case the amp, preamp or receiver has a single LFE out or sub line out, then connect it to the LFE port of the sub.


Polk Monitor XT12 is an affordable subwoofer.



How to use the speaker inputs of the Polk XT 12 subwoofer?

In case the amplifier or receiver you have chosen does not have LFE or pre out jack, use the speaker inputs of the subwoofer to establish a connection. Then use speaker cables to connect from speaker output ports of the amp or receiver to the speaker level in of the subwoofer.

Is Polk Monitor XT 12 wireless?

Polk Monitor XT 12 is not wireless. It connects to an AC power supply via the 6.5” power cord.


Where to buy


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