In this review, we will be comparing Alpha P3 and Alpha P5, two Passive Bookshelf speakers by PSB Let's have a brief look at the main features
of PSB P3 and PSB P5 first before getting into our more
detailed comparison.
Alpha P3 and Alpha P5 are members of PSB's Alpha series of speakers. Below you can find the loudspeakers from this series.
What size room are the PSB P3 and PSB P5 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 PSB P3 and PSB P5 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 Alpha P3 and Alpha P5 are 2-way speakers.
| Driver |
PSB P3 |
PSB P5 |
|
Driver Setup
|
2-way
|
2-way
|
|
Tweeter
|
0.75-inch
|
0.75-inch
|
|
Midrange
|
- |
- |
|
Woofer
|
1 x 4.5-inch
|
1 x 5.25-inch
|
Alpha P3 features a 0.75" anodized aluminum Hard-Dome Tweeter and 1 x 4.5" Polypropylene Woofer with a Crossover frequency at 3000Hz. On the other hand, the Alpha P5 features a 0.75" anodized aluminum Hard-Dome Tweeter and 1 x 5.25" Polypropylene Woofer with a Crossover frequency at 2500Hz.
Frequency Response
Alpha P3 has a frequency range of 57-21k Hz whereas Alpha P5 has a frequency range of 55-21k Hz. With a minimum frequency of 55Hz, the Alpha P5 can go slightly deeper then the Alpha P3's min frequency of 57Hz.
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
Alpha P3 and Alpha P5 have the same Impedance of 8 ohms but where they differ is the sensitivity levels. Alpha P3 sensitivity is rated at 87 dB and the Alpha P5's is at 89 dB. This 2 dB difference makes the PSB P5 a more sensitive speaker compared to PSB P3, 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.
Alpha P3 can handle a max power of 90 watts RMS from the amp the whereas Alpha P3 has a max power handling value of 80 watts RMS , 10 watts less than the Alpha P5.
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 P3 features 5-way post type posts and Alpha P5 has a 5-way post type posts. None of these speakers feature bi-amping/bi-wiring.
PSB P3's 5-way post terminals
PSB P5's 5-way post terminals
Cabinet Type and Port Position
Both Alpha P3 and Alpha P5 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 P3's and PSB P5's external dimensions. PSB P3 has external dimensions of 223.0 x 132.0 x 186.0mm ( 8-3/4 x 5-3/16 x 7-5/16inch) whereas PSB P5 has external dimensions of 289.0 x 172.0 x 254.0mm ( 11-3/8 x 6-3/4 x 10inch) .
PSB P5 is clearly the larger of the two speakers. Its body is 40mm wider, 66mm taller and 68mm deeper than PSB P3.
Below you can see the front view size comparison of PSB P3 and PSB P5 in scale.
Comparison image of PSB P3 and PSB P5 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 P3 is approximately 245.5cm2 / 38.1inch2 and base area of the PSB P5 is approximately 436.9cm2 / 67.7inch2. The Alpha P3 requires 44% less surface area than the Alpha P5 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 PSB P3 and PSB P5 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 PSB P3 weighs 2.23kg / 4.9lbs and the PSB P5 weighs 4.61kg / 10.1lbs. This makes the Alpha P5 107% heavier than the Alpha P3.
Here is a comparison of how Alpha P3 and Alpha P5's weights compare with the average, max and min weights in Passive Bookshelf class.
Weight
All Bookshelf Speakers
What's in the Box of PSB P3?
Here are the items that are included inside the box of Alpha P3:
2 Bookshelf loudspeakers 2 Grilles 8 Self-adhesive rubber feet Quick Start Guide Warranty Card
What's in the Box of PSB P5?
Here are the items that come with the Alpha P5:
2 Bookshelf loudspeakers 2 Grilles 8 Self-adhesive rubber feet Quick Start Guide Warranty Card
 Height |
223mm
vs
289mm
|
Easier to fit in smaller spaces |
 Base Surface Area |
245cm2 (132x186mm)
vs
436cm2 (172x254mm)
|
Takes less floor space |
 Price per pair* |
279USD
vs
449USD
|
costs less (*prices may change depending on the seller, location and time) |
 Max Input Power |
90 watts
vs
80 watts
|
Handle more power from your amplifier |
 Sensitivity |
89 dB
vs
87 dB
|
Play louder with same amount of amplification power |
 Woofer Size |
5.25 inches
vs
4.5 inches
|
Larger woofer |
| Low Frequency Response |
55 Hz
vs
57 Hz
|
Generates deeper bass |
| General |
PSB Alpha P3 |
PSB Alpha P5 |
| Brand |
PSB |
PSB |
| Speaker Type |
Bookshelf speakers |
Bookshelf speakers |
| Power Range |
10-80 watts |
10-90 watts |
| Sensitivity |
87 dB |
89 dB |
| Impedance |
8 ohms |
8 ohms |
| Impedance |
4 ohms |
4 ohms |
| Frequency Response |
57-21k Hz |
55-21k Hz |
Drivers |
|
|
| Woofer Quantity |
1 |
1 |
| Woofer Size |
4.5" |
5.25" |
| Woofer Composition |
Polypropylene |
Polypropylene |
| Woofer Surround Material |
Rubber |
Rubber |
| Tweeter Size |
0.75" |
0.75" |
| Tweeter Type |
Hard-Dome |
Hard-Dome |
| Aimable Tweeter |
No |
No |
| Midrange Driver |
No |
No |
| Crossover Frequency |
3000Hz |
2500Hz |
| Firing Direction |
rear |
rear |
Physical Specs |
|
|
| Height |
223.0mm (8.8") |
289.0mm (11.4") |
| Width |
132.0mm (5.2") |
172.0mm (6.8") |
| Depth |
186.0mm (7.3") |
254.0mm (10") |
| Weight |
2.23kg (4.9lbs) |
4.61kg (10.1lbs) |
| Enclosure |
Bass Reflex |
Bass Reflex |
| Finish |
MDF, Wood-grain vinyl |
MDF, Wood-grain vinyl |
| Available Colors |
Walnut,Black Ash |
Walnut,Black Ash |
| Mounting Bracket |
No |
No |
| Recommended Stand Height |
28-30" |
28-30" |
| 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 |