In this review, we will be comparing Alpha P3 and Alpha AM5, two Bookshelf speakers by PSB The main difference between these two speakers is that the PSB Alpha AM5 is a Powered speaker which means that it has a built-in amplifier inside the speaker body so you don't need an external power amp or an integrated amp whereas the PSB P3 is a Passive speaker so has to be matched with an amplifier to get any sound from it. Let's have a brief look at the main features
of PSB P3 and PSB Alpha AM5 first before getting into our more
detailed comparison.
Alpha P3 and Alpha AM5 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 P3 and PSB Alpha AM5 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 P3 and Alpha AM5 are 2-way speakers.
| Driver |
PSB P3 |
PSB Alpha AM5 |
|
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 AM5 features a 0.75" Aluminum Hard-Dome Tweeter and 1 x 5.25" Polypropylene Woofer .
Frequency Response
Alpha P3 has a frequency range of 57-21k Hz whereas Alpha AM5 has a frequency range of 55-20k Hz. With a minimum frequency of 55Hz, the Alpha AM5 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.
Cabinet Type and Port Position
Both Alpha P3 and Alpha AM5 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 Alpha AM5'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 Alpha AM5 has external dimensions of 292.1 x 171.5 x 279.4mm ( 11.5 x 6.75 x 11inch) .
PSB Alpha AM5 is clearly the larger of the two speakers. Its body is 39.5mm wider, 69.1mm taller and 93.4mm deeper than PSB P3.
Below you can see the front view size comparison of PSB P3 and PSB Alpha AM5 in scale.
Comparison image of PSB P3 and PSB Alpha AM5 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 Alpha AM5 is approximately 479.2cm2 / 74.3inch2. The Alpha P3 requires 49% less surface area than the Alpha AM5 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 Alpha AM5 on a Media Console
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 Alpha AM5?
Here are the items that come with the Alpha AM5:
Powered speaker Passive speaker 2 Grilles AC power adapter (attached 45-inch DC cord) 4-feet AC power cord Remote control (PSR-1) 2 AAA batteries 8-feet Speaker cable 58-inch Stereo minijack cable 8 Self-adhesive rubber feet Connection Diagram Warranty Card