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Compact speakers deliver deceptively big sound

The Alpha LR1s are the smallest speakers in PSB's lineup, yet they still manage to deliver dependably crisp, clear PSB sound. These versatile speakers can be used as both front and rear satellite speakers, making them an excellent choice when you're looking to create a high-end, budget-friendly five- or seven-speaker satellite system. Designed to be wall-mounted or placed on an entertainment stand, they're the perfect solution for rooms with various seating arrangements and odd sizing.

Excellence by design

PSB's engineers began by designing each Alpha speaker from scratch to ensure that they'll deliver the same level of performance typically found on speakers twice their price. The Alpha LR1s use a 3/4" aluminum dome tweeter to deliver crisp, sparkling highs. The 3-1/2" woofer is made of metalized polypropylene, making it strong but lightweight. You'll hear excellent midrange detail and distinct bass without a trace of the listening fatigue that can happen with lesser speakers.

Build a complete Alpha system

Create a complete, budget-friendly Alpha home theater system using five to seven LR1 speakers mounted around your room. Or use the LR1s in the back of your room, and add a pair of Alpha T1 floor-standing speakers or the B1 bookshelf speakers to the front of your room. And don't forget to pick up a PSB powered subwoofer (or two) for room-thumping bass.

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Product Highlights:

  • frequency response: 90-21,000 Hz (±3dB)
  • sensitivity: 87 dB
  • impedance: 6 ohms
  • recommended power: 15-80 watts
  • 3/4" aluminum dome tweeter
  • 3-1/2" clay metalized polypropylene woofer
  • bass reflex (ported) design
  • gold-plated five-way binding posts
  • keyhole slot and threaded insert for optional wall mounting
  • black ash vinyl finish
  • 4-11/16"W x 7-3/16"H x 6-1/2"D (each)
  • weight: 4.1 lbs. (each)
  • warranty: 5 years
  • Our 60-day money-back guarantee

Why choose bookshelf speakers?

Bookshelf speakers may be small in size, but they can deliver surprisingly big sound. Some ultra-compact models even fit on a desktop. Most are right at home in tight spaces like shelves, so they're usually good choices for your home theater's rear channels. For the best performance, try placing bookshelf speakers on solid speaker stands to help the sound really "open up." If you want full bass impact, add a powered subwoofer and enjoy punchy sound that's as deeply satisfying as that of floor-standing speakers.

PSB Alpha LR1 Reviews

Average Customer Review:

1 Review

Alpha LR1

Written by: DAR from York, PA on August 25, 2014

Crutchfield Customer Review (What's this?)

perfect speaker for my application in terms of size, sound reproduction and price. needed a small satellite type speaker for a wall mount location in a 5.1 music/movie setup. the room is not large and already had speaker mounts on the walls, but only enough room for a small bookshelf. fills out the surround field perfectly, look great, sound great and the Crutchfield special pricing was a bonus. also took some time to break them in on another system and they sound pretty good with a small 8 inch sub to help fill in the lower end. highly recommended for these type of applications.

Pros: small size, super clean highs, good looks, great for small satellite installations and small bookshelf and sub setups

Cons: none

Hands-on research

What's in the box?

Download owner's manual

  • 2 Bookshelf loudspeakers
  • 2 Detachable grilles (installed)
  • 8 Self-adhesive rubber feet
  • Owner's Manual (En/Fre/Sp/GE)
  • Limited Warranty information

Features and Specs

Enclosure Acoustic Suspension
Video Shielded Yes
Tweeter Type Dome
Tweeter Size (inches) 0.75
Midrange Size (inches) N/A
Woofer Size (inches) 3.5
Woofer Composition Polypropylene
Woofer Surround Rubber
Power Range 15-80
Sensitivity 87 dB
Impedance (Ohms) 6
Frequency Response 90-21k Hz
Connector Type 5-way post
Bi-amp Inputs No
Height (inches) 7-3/16
Width (inches) 4-11/16
Depth (inches) 6-1/2
Weight (pounds) 4.1
Mounting Bracket Included Keyhole
Recommended Stand Height (inches) 26-31
Parts Warranty 5 Years
Labor Warranty 5 Years

Product Research

Driver Technology
Enclosure Design
Mounting Options

Driver Technology

Two-Way Design: The PSB Alpha Series LR1 loudspeaker features a true two-way design that employs a single 3.5" mid-woofer paired with a single .75" ferrofluid-cooled tweeter. The result is an extremely tight sound with excellent imaging characteristics

3.5" Woofer: Each PSB Alpha Series LR1 speaker employs a 3.5" injection molded metalized polypropylene woofer with rubber surround.

0.75" Tweeter: Each Alpha Series LR1 is equipped with a 0.75" aluminum dome, ferrofluid-cooled tweeter.

Waveguide: The LR1's tweeters utilize an acoustical waveguide to deliver, more even high frequency response, no matter what part of the room you're in.

Crossover Network: The tweeters and woofers are crossed over at 3,000 Hz.

Magnetically Shielded: The LR1 is magnetically shielded for safe placement adjacent to your television.

Enclosure Design

Wood Grain Vinyl Cabinet: The PSB Alpha Series LR1 features a black wood grain vinyl cabinet that matches almost any decor.

Acoustic Suspension Design: The Alpha Series LR1 utilizes an acoustic suspension (sealed) enclosure for tight, accurate midbass performance.

Aluminum Grille: The speakers come with removable aluminum (metal-mesh) black grilles.


5-Way Binding Posts: The 5-way binding posts will accept bare wire (up to 12-gauge), pin connectors, spade connectors, banana plugs, and dual banana plugs.

Color-Coded: The speaker's binding posts are color-coded (red/black) for easy identification between positive and negative.

Mounting Options

Rubber Feet: The PSB LR1 loudspeakers include eight self-adhesive rubber feet to safely and securely place the speakers on floor-stands or other AV furniture.

Wall Mounting: Each PSB Alpha Series LR1speaker features a single keyhole slot and a 1/4"-20 threaded insert to wall-mount the speaker. In addition, non-skid rubber bumpers are attached in the corners of each speaker, so not to mar wall surfaces when the speakers are mounted.

  • Keyhole Slot: Each Alpha Series LR1 speaker has a single keyhole slot on the back panel to easily wall-mount the speakers.
  • 1/4"-20 Threaded Insert: Each LR1 loudspeaker also features a single 1/4"-20 threaded insert to wall-mount the speakers using optional articulating brackets (sold separately).


Frequency Response:

  • On Axis @ 0°: 90-21,000 Hz (+/-3dB)
  • Off Axis @ 30°: 90-10,000 Hz (+/-3dB)
  • Low Frequency Cutoff -10 dB: 85 Hz


  • Anechoic Chamber:  85dB
  • Typical Listening Room: 87 dB

Internal Volume: 0.07 cu ft

Our Product Research Team

At Crutchfield, you'll get detailed, accurate information that's hard to find elsewhere. That's because we have our own in-house Product Research team. They verify what’s in the box, check the owner's manual, and record dimensions, features and specs. We stay on top of new products and technologies to help people make informed choices.