PSB Speakers Alpha Series 5.25" Bookshelf Speaker-ALPHA B1

Model #: ALPHA B1
PSB Speakers
At a Glance

PSB Speakers Alpha Series 5.25" Bookshelf Speaker with 0.75" aluminum dome tweeter and 91dB sensitivity

$299.00Save $NaN

Get to know this product.

For those seeking a compact, cost effective speaker, yet do not want to compromise sound quality for space, the Alpha B1 Bookshelf Speakers are the answer. We begin with a solid modular bass-reflex cabinet and load it with our newly designed, hand-built drivers and crossover network. The 5.25-inch woofer paired with a single .75-inch ferrofluid-cooled tweeter creates a 2-way design that is truly remarkable; and professional audio critics agree. Match the Alpha B1 to one of our compact subwoofers to create a powerful soundstage and discover for yourself why the Alpha B1 is among our best selling speakers.

Frequency Response

  • On Axis @ 0° ± 3dB - 65-21,000Hz
  • Off Axis @ 30° ± 1 1/2dB - 65-10,000Hz
  • LF Cutoff -10dB - 55Hz




Useful Documents


Enclosure Type:Bass Reflex
Tweeter Composition:Aluminum Dome
Woofer Composition: Polypropylene Cone


Video Shielded:Yes


Crossover Type:3000Hz
Sold As:Pair


Sensitivity:91 dB


Color:Black Ash

Misc. Specs

Product Weight10.2
Depth (in.)9.75
Width (in.)7.13
Height (in.)11.88
Impedance8 ohms
Woofer Size5.25"
Number of Speakers2
WarningProposition 65 Warning for California Residents