In this review, we will be comparing Imagine X1T and S55, two Passive Floor-standing speakers from PSB and Polk Audio.
Let's have a brief look at the main features
of PSB Imagine X1T and Polk S55 first before getting into our more
detailed comparison.
PSB Imagine X1T Key Specs
- 2-way Design
- 1" Dome Tweeter
- 2 x 5.25" Clay/Ceramic/Poly Woofer
- 35-23k Hz Frequency Response
- 90 dB Sensitivity
- Impedance: 8ohms
- Power Range:20-200watts
- Weight:17.30kg
- Dimensions (H x W x D): 877.0" x 8-1/4" x 14-7/8"( 877.0 x 210.0 x 378.0mm )
Polk S55 Key Specs
- 2-way Design
- 1" Dome Tweeter
- 2 x 6.5" Mica-reinforced polypropylene Woofer
- 32-40k Hz Frequency Response
- 90 dB Sensitivity
- Impedance: 8ohms
- Power Range:20-200watts
- Weight:20.00kg
- Dimensions (H x W x D): 1056.0" x 11-3/4" x 12-3/8"( 1056.0 x 299.0 x 315.0mm )
What size room are the PSB Imagine X1T and Polk S55 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:
| Listening Environment* |
PSB Imagine X1T |
Polk S55 |
| Near-field |
Bad |
Bad |
| Small Room |
Poor |
Poor |
| Mid-size Room |
Good |
Good |
| Large Room |
Good |
Good |
| Very Large Room |
Poor |
Poor |
(* Approximate Room sizes: Small < 100sq. ft / 9 m2,
Mid-size: 100-220 sq. ft / 9-20 m2, Large 220-400 sq. ft / 20-36 m2, Very Large: >
400 sq. ft / 36 m2.
Average Floor Height: 9" / 2.7m. Typical room sizes differ from country to country, and the actual
listening experience changes depending on floor height, room shape, surface materials, listening
position, speaker locations, etc.)
In the following sections, we will get into more detail in order to better understand how the PSB Imagine X1T and Polk S55 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 Imagine X1T and S55 are 2-way speakers.
| Driver |
PSB Imagine X1T |
Polk S55 |
|
Driver Setup
|
2-way
|
2-way
|
|
Tweeter
|
1-inch
|
1-inch
|
|
Midrange
|
- |
- |
|
Woofer
|
2 x 5.25-inch
|
2 x 6.5-inch
|
Imagine X1T features a 1" titanium with neodymium magnets Dome Tweeter and 2 x 5.25" Clay/Ceramic/Poly Woofer with a Crossover frequency at 1800Hz. On the other hand, the S55 features a 1" Terylene Dome Tweeter and 2 x 6.5" Mica-reinforced polypropylene Woofer with a Crossover frequency at 2500Hz.
Frequency Response
Imagine X1T has a frequency range of 35-23k Hz whereas S55 has a frequency range of 32-40k Hz. With a minimum frequency of 32Hz, the S55 can go slightly deeper then the Imagine X1T's min frequency of 35Hz.
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 Floor-standing class in our database.
Low Frequency
Floor-standing Speakers
High Frequency
Floor-standing 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
Imagine X1T and S55 have the same Impedance of 8 ohms and their sensitivity is also same at 90 dB.
Sensitivity
Floor-standing 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.
Imagine X1T and S55 has the same power range of 20-200 watts.
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
Both Imagine X1T and S55 features dual binding post speaker terminals for bi-amping or bi-wiring.
PSB Imagine X1T's 5-Way post terminals allows Bi-amping or bi-wiring
Polk S55's 5-way post terminals allows Bi-amping or bi-wiring
Cabinet Type and Port Position
Imagine X1T has a front firing port whereas S55 has a bottom firing ports. PSB Imagine X1T's front-firing port gives more flexibility in placement in regards to proximity to walls compared to Polk S55 with its rear-firing port.
Polk S55 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 PSB Imagine X1T's and Polk S55's external dimensions. PSB Imagine X1T has external dimensions of 877.0 x 210.0 x 378.0mm ( 34-1/2 x 8-1/4 x 14-7/8inch) whereas Polk S55 has external dimensions of 1056.0 x 299.0 x 315.0mm ( 41-9/16 x 11-3/4 x 12-3/8inch) .
PSB Imagine X1T is 89mm narrower and 179mm shorter than Polk S55 but it is also 63mm deeper.
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 PSB Imagine X1T is approximately 793.8cm2 / 123.0inch2 and base area of the Polk S55 is approximately 941.9cm2 / 146.0inch2. The Imagine X1T requires 16% less surface area than the S55 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 PSB Imagine X1T weighs 17.30kg / 38.1lbs and the Polk S55 weighs 20.00kg / 44lbs. This makes the S55 16% heavier than the Imagine X1T.
Here is a comparison of how Imagine X1T and S55's weights compare with the average, max and min weights in Passive Floor-standing class.
Weight
All Floor-standing Speakers
What's in the Box of PSB Imagine X1T?
Here are the items that are included inside the box of Imagine X1T:
Floor-standing speakerGrille4 Rubber feet4 Spiked FeetWrenchQuick Start GuideWarranty Card
What's in the Box of Polk S55?
Here are the items that come with the S55:
Floorstanding loudspeakerGrille (attached)4 Feet (pre-installed)Owners ManualOnline Product Registration
 Height |
877mm
vs
1056mm
|
Easier to fit in smaller spaces |
 Base Surface Area |
793cm2
vs
941cm2
|
Takes less floor space |
 Woofer Size |
6.5 inches
vs
5.25 inches
|
Larger woofer |
|
Low Frequency Response |
32 Hz
vs
35 Hz
|
Generates deeper bass |
 High Frequency Response |
40k Hz
vs
23k Hz
|
Generates higher frequency |
 Price per pair* |
658USD
vs
1200USD
|
costs less (*prices may change depending on the seller, location and time) |
| General |
PSB Imagine X1T |
Polk Audio Signature S55 |
| Brand |
PSB |
Polk Audio |
| Speaker Type |
Floor-standing speaker |
Floor-standing speaker |
| Power Range |
20-200 watts |
20-200 watts |
| Sensitivity |
90 dB |
90 dB |
| Impedance |
8 ohms |
8 ohms |
| Impedance |
4 ohms |
n/a |
| Frequency Response |
35-23k Hz |
32-40k Hz |
Drivers |
|
|
| Woofer Quantity |
2 |
2 |
| Woofer Size |
5.25" |
6.5" |
| Woofer Composition |
Clay/Ceramic/Poly |
Mica-reinforced polypropylene |
| Woofer Surround Material |
Rubber |
Butyl rubber |
| Tweeter Size |
1" |
1" |
| Tweeter Type |
Dome |
Dome |
| Aimable Tweeter |
No |
No |
| Midrange Driver |
No |
No |
| Crossover Frequency |
1800Hz |
2500Hz |
| Firing Direction |
front |
bottom |
Physical Specs |
|
|
| Height |
877.0mm (34.5") |
1056.0mm (41.6") |
| Width |
210.0mm (8.3") |
299.0mm (11.8") |
| Depth |
378.0mm (14.9") |
315.0mm (12.4") |
| Weight |
17.30kg (38.1lbs) |
20.00kg (44lbs) |
| Enclosure |
Bass Reflex |
Bass Reflex |
| Finish |
MDF/Wood-grain |
Meddite MDF |
| Available Colors |
Black |
Black |
| Grille |
Yes |
Yes |
| Moisture Resistancy |
No |
No |
Connections |
|
|
| Biamp Inputs |
Yes |
Yes |
Other |
|
|
| Parts Warranty |
5 Years |
5 Years |
| Labor Warranty |
5 Years |
5 Years |