In this review, we will be comparing Blackstone TL1 and Monitor XT30, two Passive Center Channel speakers by Polk Audio Let's have a brief look at the main features
of Polk TL1 and Polk XT30 first before getting into our more
detailed comparison.
What size room are the Polk TL1 and Polk XT30 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 TL1 and Polk XT30 compare and hopefully end up with enough arguments to decide which one of these loudspeakers is the better choice for you.
**This post contains affiliate links, and I will be compensated if you make a purchase after clicking
through my links. As an Amazon Associate I earn from qualifying purchases.
Drivers
Both Blackstone TL1 and Monitor XT30 are 2-way speakers.
| Driver |
Polk TL1 |
Polk XT30 |
|
Driver Setup
|
2-way
|
2-way
|
|
Tweeter
|
0.5-inch
|
1-inch
|
|
Midrange
|
- |
- |
|
Woofer
|
2 x 2.5-inch
|
2 x 5.25-inch
|
Blackstone TL1 features a 0.5" silk dome Tweeter and 2 x 2.5" Dynamic Balance Woofer . On the other hand, the Monitor XT30 features a 1" Terylene High-res dome Tweeter and 2 x 5.25" bi-laminate paper cone Woofer .
Frequency Response
Blackstone TL1 has a frequency range of 125-20k Hz whereas Monitor XT30 has a frequency range of 55-40k Hz. With a minimum frequency of 55Hz, the Monitor XT30 can go significantly deeper on the low side and provide stronger bass compared to the Blackstone TL1's min frequency of 125Hz.
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 Center Channel class in our database.
Low Frequency
Center Channel Speakers
High Frequency
Center Channel 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
Blackstone TL1 and Monitor XT30 have the same Impedance of 8 ohms and their sensitivity is also same at 89 dB.
Sensitivity
Center Channel 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.
Blackstone TL1 can handle a max power of 200 watts RMS from the amp the whereas Blackstone TL1 has a max power handling value of 125 watts RMS , 75 watts less than the Monitor XT30.
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
Blackstone TL1 features 5-Way post type posts and Monitor XT30 has a 5-Way post type posts. None of these speakers feature bi-amping/bi-wiring.
Polk XT30's 5-Way post terminals
Cabinet Type and Port Position
Both Blackstone TL1 and Monitor XT30 have rear firing ports. Rear ported speakers generally need more room between the backside of the speaker and the wall compared to sealed and front/bottom ported speakers. Placing the speakers too close to the walls may cause the bass to sound boomy.
If you are limited in space and can't get the speakers away from the backwall, check our Speakers with Front Firing Ports page.
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 TL1's and Polk XT30's external dimensions. Polk TL1 has external dimensions of 101.0 x 381.0 x 88.0mm ( 3-15/16 x 15 x 3-7/16inch) whereas Polk XT30 has external dimensions of 166.0 x 485.0 x 208.0mm ( 6-1/2 x 19-1/16 x 8-3/16inch) .
Polk XT30 is clearly the larger of the two speakers. Its body is 104mm wider, 65mm taller and 120mm deeper than Polk TL1.
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 TL1 is approximately 335.3cm2 / 52.0inch2 and base area of the Polk XT30 is approximately 1008.8cm2 / 156.4inch2. The Blackstone TL1 requires 67% less surface area than the Monitor XT30 which gives it a small advantage on placement in tight spaces.
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 TL1 weighs 1.84kg / 4lbs and the Polk XT30 weighs 5.91kg / 13lbs. This makes the Monitor XT30 221% heavier than the Blackstone TL1.
Here is a comparison of how Blackstone TL1 and Monitor XT30's weights compare with the average, max and min weights in Passive Center Channel class.
Weight
All Center Channel Speakers
What's in the Box of Polk TL1?
Here are the items that are included inside the box of Blackstone TL1:
Gloss-black center-channel loudspeakerDetachable black cloth grille (attached)System Diagram/Warranty sheetTemplateOnline Product Registration cardImportant Safety Instructions
What's in the Box of Polk XT30?
Here are the items that come with the Monitor XT30:
Center-channel loudspeakerGrille (attached)4 Self-adhesive rubber feetOwners ManualOnline Product RegistrationWall-Mount Template
 Height |
101mm
vs
166mm
|
Easier to fit in smaller spaces |
 Base Surface Area |
335cm2 (381x88mm)
vs
1008cm2 (485x208mm)
|
Takes less floor space |
 Price per pair* |
79USD
vs
199USD
|
costs less (*prices may change depending on the seller, location and time) |
 Max Input Power |
200 watts
vs
125 watts
|
Handle more power from your amplifier |
 Woofer Size |
5.25 inches
vs
2.5 inches
|
Larger woofer |
| Low Frequency Response |
55 Hz
vs
125 Hz
|
Generates deeper bass |
 High Frequency Response |
40k Hz
vs
20k Hz
|
Generates higher frequency |
| General |
Polk Audio Blackstone TL1 |
Polk Audio Monitor XT30 |
| Brand |
Polk Audio |
Polk Audio |
| Speaker Type |
Center channel speaker |
Center channel speaker |
| Power Range |
10-125 watts |
30-200 watts |
| Sensitivity |
89 dB |
89 dB |
| Impedance |
8 ohms |
8 ohms |
| Frequency Response |
125-20k Hz |
55-40k Hz |
Drivers |
|
|
| Woofer Quantity |
2 |
2 |
| Woofer Size |
2.5" |
5.25" |
| Woofer Composition |
Dynamic Balance |
bi-laminate paper cone |
| Tweeter Size |
0.5" |
1" |
| Tweeter Type |
dome |
High-res dome |
| Aimable Tweeter |
No |
No |
| Midrange Driver |
No |
N/A" |
| Firing Direction |
rear |
rear |
Physical Specs |
|
|
| Height |
101.0mm (4") |
166.0mm (6.5") |
| Width |
381.0mm (15") |
485.0mm (19.1") |
| Depth |
88.0mm (3.5") |
208.0mm (8.2") |
| Weight |
1.84kg (4lbs) |
5.91kg (13lbs) |
| Enclosure |
Bass Reflex |
Bass Reflex |
| Available Colors |
Gloss Black |
Black |
| Grille |
Yes |
Yes |
| Moisture Resistancy |
No |
No |
Connections |
|
|
Other |
|
|
| Parts Warranty |
5 Years |
5 Years |
| Labor Warranty |
5 Years |
5 Years |