In this review, we will be comparing R100 and XT20, two Passive Bookshelf speakers by Polk Audio Let's have a brief look at the main features
of Polk R100 and Polk XT20 first before getting into our more
detailed comparison.
What size room are the Polk R100 and Polk XT20 speakers good for?
The size of the room in which you are planning to use these loudspeakers is an important decision factor. Here we have compared their suitability to various sizes of environments considering their size and max power parameters:
In the following sections, we will get into more detail in order to better understand how the Polk R100 and Polk XT20 compare and hopefully end up with enough arguments to decide which one of these loudspeakers is the better choice for you.
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through my links. As an Amazon Associate I earn from qualifying purchases.
Drivers
Both R100 and XT20 are 2-way speakers.
| Driver |
Polk R100 |
Polk XT20 |
|
Driver Setup
|
2-way
|
2-way
|
|
Tweeter
|
1-inch
|
1-inch
|
|
Midrange
|
- |
- |
|
Woofer
|
1 x 5.25-inch
|
1 x 6.5-inch
|
R100 features a 1" Pinnacle Ring Radiator Tweeter and 1 x 5.25" Polypropylene Turbine Cone Woofer with a Crossover frequency at 2700Hz. On the other hand, the XT20 features a 1" Soft-Dome Tweeter and 1 x 6.5" Bi-laminate paper Woofer .
Frequency Response
R100 has a frequency range of 58-39k Hz whereas XT20 has a frequency range of 38-40k Hz. With a minimum frequency of 38Hz, the XT20 can go significantly deeper on the low side and provide stronger bass compared to the R100's min frequency of 58Hz.
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 Bookshelf class in our database.
Low Frequency
Bookshelf Speakers
High Frequency
Bookshelf Speakers
None of these speakers achieves full range experience which is commonly agreed as 20Hz-20kHz. In order to achieve lower lows / deeper bass, we recommend you pair these with a subwoofer. Visit our Powered Subwoofers section to find out more about the available options.
Impedance and Sensitivity
R100 and XT20 have the same Impedance of 8 ohms but where they differ is the sensitivity levels. R100 sensitivity is rated at 86 dB and the XT20's is at 87 dB. This 1 dB difference makes the Polk XT20 a more sensitive speaker compared to Polk R100, hence will play louder with the same amount of watts.
Sensitivity
Bookshelf Speakers
Power Range
Power
range is the range of input power in watts RMS that a loudspeaker is designed to handle. While using an amplifier within this range ensures the nominal performance , inputting a power that is higher than the max wattage can result in a damaged speaker.
R100 can handle a max power of 200 watts RMS from the amp the whereas R100 has a max power handling value of 150 watts RMS , 50 watts less than the XT20.
Keep in mind that a higher max power handling value doesn't necessarily make that a louder speaker
compared to a lower max handling speaker. Loudness or the sound level is also impacted by parameters
such as Impedance, sensitivity and system efficiencies.
Input Type and Bi-Amping / Bi-Wiring
R100 features 5-Way post type posts and XT20 has a 5-Way post type posts. None of these speakers feature bi-amping/bi-wiring.
Polk R100's Binding post terminals
Polk R100 Port
Physical Specs
Size of a speaker can sometimes become 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 R100's and Polk XT20's external dimensions. Polk R100 has external dimensions of 326.0 x 167.0 x 259.0mm ( 12-13/16 x 6-9/16 x 10-3/16inch) whereas Polk XT20 has external dimensions of 332.0 x 193.0 x 281.0mm ( 13-1/16 x 7-9/16 x 11-1/16inch) .
Polk XT20 is clearly the larger of the two speakers. Its body is 26mm wider, 6mm taller and 22mm deeper than Polk R100.
Below you can see the front view size comparison of Polk R100 and Polk XT20 in scale.
Comparison image of Polk R100 and Polk XT20 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 R100 is approximately 432.5cm2 / 67.0inch2 and base area of the Polk XT20 is approximately 542.3cm2 / 84.1inch2. The R100 requires 20% less surface area than the XT20 which gives it a small advantage on placement in tight spaces.
Here is an another comparison that shows both speakers on a BDI Octave Media Cabinet, next to a standard size amplifier and turntable in scale:
Size Comparison image of Polk R100 and Polk XT20 on a Media Console
Weight Comparison The weight of a loudspeaker can become an important factor if you need to move and reposition the unit often. Weight of a speaker can also "sometimes" be an indicator of the rigidity of the enclosure and the quality of the internal components used. The Polk R100 weighs 5.55kg / 12.2lbs and the Polk XT20 weighs 5.45kg / 12lbs. This makes the R100 2% heavier than the XT20.
Here is a comparison of how R100 and XT20's weights compare with the average, max and min weights in Passive Bookshelf class.
Weight
All Bookshelf Speakers
What's in the Box of Polk R100?
Here are the items that are included inside the box of R100:
2 Bookshelf loudspeakers2 GrillesOwners ManualOnline Registration
What's in the Box of Polk XT20?
Here are the items that come with the XT20:
2 Bookshelf loudspeakers2 Grilles (attached)8 Self-adhesive rubber feetOwners ManualOnline Product Registration
 Height |
326mm
vs
332mm
|
Easier to fit in smaller spaces |
 Base Surface Area |
432cm2 (167x259mm)
vs
542cm2 (193x281mm)
|
Takes less floor space |
 Max Input Power |
200 watts
vs
150 watts
|
Handle more power from your amplifier |
 Sensitivity |
87 dB
vs
86 dB
|
Play louder with same amount of amplification power |
 Woofer Size |
6.5 inches
vs
5.25 inches
|
Larger woofer |
| Low Frequency Response |
38 Hz
vs
58 Hz
|
Generates deeper bass |
 High Frequency Response |
40k Hz
vs
39k Hz
|
Generates higher frequency |
 Price per pair* |
299USD
vs
649USD
|
costs less (*prices may change depending on the seller, location and time) |
| General |
Polk Audio Reserve R100 |
Polk Audio Monitor XT20 |
| Brand |
Polk Audio |
Polk Audio |
| Speaker Type |
Bookshelf speakers |
Bookshelf speakers |
| Power Range |
30-150 watts |
30-200 watts |
| Sensitivity |
86 dB |
87 dB |
| Impedance |
8 ohms |
8 ohms |
| Impedance |
3.6 ohms |
n/a |
| Frequency Response |
58-39k Hz |
38-40k Hz |
Drivers |
|
|
| Woofer Quantity |
1 |
1 |
| Woofer Size |
5.25" |
6.5" |
| Woofer Composition |
Polypropylene Turbine Cone |
Bi-laminate paper |
| Woofer Surround Material |
Rubber |
Rubber |
| Tweeter Size |
1" |
1" |
| Tweeter Type |
Pinnacle Ring Radiator |
Soft-Dome |
| Aimable Tweeter |
No |
No |
| Midrange Driver |
No |
No |
| Crossover Frequency |
2700Hz |
n/a |
| Firing Direction |
rear |
n/a |
Physical Specs |
|
|
| Height |
326.0mm (12.8") |
332.0mm (13.1") |
| Width |
167.0mm (6.6") |
193.0mm (7.6") |
| Depth |
259.0mm (10.2") |
281.0mm (11.1") |
| Weight |
5.55kg (12.2lbs) |
5.45kg (12lbs) |
| Enclosure |
Bass Reflex |
Bass Reflex |
| Finish |
MDF/Vinyl |
MDF, Vinyl |
| Available Colors |
Black, Walnut, White |
Black |
| Mounting Bracket |
No |
No |
| Recommended Stand Height |
24-28" |
24-28" |
| Grille |
Yes |
Yes |
| Moisture Resistancy |
No |
No |
Connections |
|
|
| Biamp Inputs |
No |
No |
Other |
|
|
| Parts Warranty |
5 Years |
5 Years |
| Labor Warranty |
5 Years |
5 Years |