In this review, we will be comparing two different type of speakers by PSB. PSB Alpha C10 is a Center Channel speaker whereas the Alpha T20 is a Floor-standing speaker.
Let's have a brief look at the main features
of PSB Alpha C10 and PSB Alpha T20 first before getting into our more
detailed comparison.
PSB Alpha C10 Key Specs
- 2-way Design
- 3/4" dome with front waveguide Tweeter
- 2 x 5.25" textured polypropylene Woofer
- 55-21k Hz Frequency Response
- 90 dB Sensitivity
- Impedance: 8ohms
- Power Range:15-120watts
- Weight:7.73kg
- Dimensions (H x W x D): 172.0" x 17-3/4" x 10"( 172.0 x 451.0 x 254.0mm )
PSB Alpha T20 Key Specs
- 2-way Design
- 0.75" Dome Tweeter
- 2 x 5.25" Polypropylene Woofer
- 36-21k Hz Frequency Response
- 90 dB Sensitivity
- Impedance: 8ohms
- Power Range:15-120watts
- Weight:11.89kg
- Dimensions (H x W x D): 869.0" x 8-5/16" x 9-13/16"( 869.0 x 212.0 x 250.0mm )
Alpha C10 and Alpha T20 are members of PSB's Alpha series of speakers. Below you can find the loudspeakers from this series.
What size room are the PSB Alpha C10 and PSB Alpha T20 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 Alpha C10 |
PSB Alpha T20 |
| Near-field |
Poor |
Bad |
| Small Room |
Average |
Poor |
| Mid-size Room |
Good |
Good |
| Large Room |
Average |
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 Alpha C10 and PSB Alpha T20 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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Drivers
Both Alpha C10 and Alpha T20 are 2-way speakers.
| Driver |
PSB Alpha C10 |
PSB Alpha T20 |
|
Driver Setup
|
2-way
|
2-way
|
|
Tweeter
|
3/4-inch
|
0.75-inch
|
|
Midrange
|
- |
- |
|
Woofer
|
2 x 5.25-inch
|
2 x 5.25-inch
|
Alpha C10 features a 3/4" anodized aluminum dome with front waveguide Tweeter and 2 x 5.25" textured polypropylene Woofer . On the other hand, the Alpha T20 features a 0.75" anodized aluminum with front waveguide Dome Tweeter and 2 x 5.25" Polypropylene Woofer with a Crossover frequency at 2500Hz.
Frequency Response
Alpha C10 has a frequency range of 55-21k Hz whereas Alpha T20 has a frequency range of 36-21k Hz. With a minimum frequency of 36Hz, the Alpha T20 can go significantly deeper on the low side and provide stronger bass compared to the Alpha C10's min frequency of 55Hz.
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
Alpha C10 and Alpha T20 have the same Impedance of 8 ohms and their sensitivity is also same at 90 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.
Alpha C10 and Alpha T20 has the same power range of 15-120 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
Alpha T20 features 5-Way post posts which make bi-amping or bi-wiring possible. Alpha C10 has a 5-Way post which doesn't feature bi-amping/bi-wiring.
PSB Alpha C10's 5-Way post terminals
PSB Alpha T20's 5-Way post terminals allows Bi-amping or bi-wiring
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 Alpha C10's and PSB Alpha T20's external dimensions. PSB Alpha C10 has external dimensions of 172.0 x 451.0 x 254.0mm ( 6-3/4 x 17-3/4 x 10inch) whereas PSB Alpha T20 has external dimensions of 869.0 x 212.0 x 250.0mm ( 34-3/16 x 8-5/16 x 9-13/16inch) .
PSB Alpha T20 is 239mm narrower and 4mm less deeper than PSB Alpha C10 but it is also 697mm taller.
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 Alpha C10 is approximately 1145.5cm2 / 177.6inch2 and base area of the PSB Alpha T20 is approximately 530.0cm2 / 82.2inch2. The Alpha C10 requires 116% more surface area than the Alpha T20 which gives it a small disadvantage on placement in tight spaces.
What's in the Box of PSB Alpha C10?
Here are the items that are included inside the box of Alpha C10:
Center-channel loudspeakerGrille4 Self-adhesive rubber feetQuick Start GuideWarranty Card
What's in the Box of PSB Alpha T20?
Here are the items that come with the Alpha T20:
2 Floorstanding loudspeakers2 Grilles8 Rubber feet8 Spike feet8 Hex-nutsQuick Start GuideWarranty Card
Height 
Price per pair* 
Low Frequency Response 
Base Surface Area