PSB Alpha P5 Bookshelf Speakers

How to Improve on a Legend
While the original intent has not changed today’s Alpha designs benefit greatly from improved materials and production techniques not to mention an additional 30 years of experience. These new Alpha models are ‘clean sheet” designs taking full advantage of the latest available technologies to create speakers that are smooth and dynamic with the ability to express the full range of musical sounds with nothing added and nothing taken away.
Improved Drivers and Materials
For the new Alpha P5 PSB developed a new 5 ¼” woofer employing dual layer voice coils with powerful magnets and polypropylene cones for detail low distortion and power handling. A new ¾” (19mm) tweeter is ferrofluid cooled and features a Neodymium magnet for high sensitivity and power handling. A wave guide on the front of the tweeter helps match the response of the tweeter near the crossover point with the woofer for a seamless transition. Of note the tweeter is placed below the woofer on some models which in concert with the precisely engineered crossover network provides a uniform sound field whether the listener is seated or standing.
Unsurpassed Value
In keeping with the Alpha philosophy the P5 indeed represents remarkable value for its size and performance. In fact though the new models easily outperform the originals all of the new Alphas are slightly cheaper than the original models when adjusted for inflation. Better performance for less money means outstanding value.

SPECIFICATIONS
Frequency Response
On Axis @ 0° ±3dB
55-21000Hz
On Axis @ 0° ±1 1/2dB
65-20000Hz
Off Axis @ 30° ±1 1/2dB
65-10000Hz
LF Cutoff -10dB
37Hz
Sensitivity
Anechoic Chamber
87dB
Listening Room
89dB
Impedance
Nominal
8 Ohms
Minimum
4 Ohms
Input Power
Recommended
10 – 90 Watts
Program
60 Watts
Acoustic Design
Tweeter (Nominal)
3/4” (19mm) Black Anodized Aluminium Dome with Ferrofluid and Neodymium Magnet
Woofer (Nominal)
5 1/4” (133mm) Textured Polypropylene Cone with Rubber Surround
Crossover
2.500Hz L4
Internal Volume
0.29 cu ft (8.3L)
Design Type
Tuned Port Bass Reflex 2” (49mm) Rear Port
Dimensions / Weights / Finish
Size (W x H x D)
6 3/4” x 11 3/8” x 9 1/2”*
(170 x 290 x 240mm)
Weight
10.15lb (4.6kg)/each
22.8lb (10.4kg)/pr
Finish**
Black Ash
Walnut