In this review, we will be comparing two different type of speakers by PSB. PSB Alpha iQ is a Bookshelf speaker whereas the Alpha T20 is a Floor-standing speaker.
Let's have a brief look at the main features
of PSB Alpha iQ and PSB Alpha T20 first before getting into our more
detailed comparison.
PSB Alpha iQ Key Specs
- 2-way Design
- 180-watt RMS Integrated Amplifier
- 0.75" Hard-Dome Tweeter
- 4" Polypropylene Woofer
- 64-20kHz Frequency Response
- 24-bit Max Depth / 192 kHz Max Sample Rate
- Built-in Bluetooth
- App Control Feature
- Weight:7.36kg
- Dimensions (H x W x D): 246.0" x 5.6" x 7.6"( 246 x 145 x 92mm )
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 iQ and Alpha T20 are members of PSB's Alpha series of speakers. Below you can find the loudspeakers from this series.
In the following sections, we will get into more detail in order to better understand how the PSB Alpha iQ 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 iQ and Alpha T20 are 2-way speakers.
| Driver |
PSB Alpha iQ |
PSB Alpha T20 |
|
Driver Setup
|
2-way
|
2-way
|
|
Tweeter
|
0.75-inch
|
0.75-inch
|
|
Midrange
|
- |
- |
|
Woofer
|
1 x 4-inch
|
2 x 5.25-inch
|
Alpha iQ features a 0.75" aluminum Hard-Dome Tweeter and 1 x 4" 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 iQ has a frequency range of 64-20kHz 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 iQ's min frequency of 64Hz.
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.
Cabinet Type and Port Position
Both Alpha iQ and Alpha T20 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 PSB Alpha iQ's and PSB Alpha T20's external dimensions. PSB Alpha iQ has external dimensions of 246 x 145 x 92mm ( 9.7 x -5.6 x 7.6 inch ) 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 clearly the larger of the two speakers. Its body is 67mm wider, 623mm taller and 58mm deeper than PSB Alpha iQ.
Below you can see the front view size comparison of PSB Alpha iQ and PSB Alpha T20 in scale.
Comparison image of PSB Alpha iQ and PSB Alpha T20 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 PSB Alpha iQ is approximately 278.0cm2 / 43.1inch2 and base area of the PSB Alpha T20 is approximately 530.0cm2 / 82.2inch2. The Alpha iQ requires 48% less surface area than the Alpha T20 which gives it a small advantage on placement in tight spaces.
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
Speaker Type 
Height 
Base Surface Area 
Ethernet Connection 
3.5mm Connection 
Woofer Size 
High Frequency Response 
Price per pair*