Main Content

Bose Free Space 51 Environmental Speakers (Pair) - 31763

Abt Model: FS51GR | UPC: 017817325455
In Stock
Your Shipping Zip Code: Add Location
Why I Bought This
See all buyer comments
  • Customer Service
    Customer Service
    Our award-winning experts are available to answer any questions at 800-914-2061 or live chat
    Learn More
  • Free Tech Support
    Free Tech Support
    Even beyond the sale and will continue to be by your side, whenever you need us.
    Learn More
  • Low Price Guarantee
    Low Price Guarantee
    We strive to give our customers the best service and pricing available anywhere.
    Learn More

Product Details

Bose Free Space® 51 environmental speakers (Pair) - 31763

All-around sound for outdoor spaces

Bring the subtle nuances of your favorite music to life in outdoor environments where wall mounting is not an option. Bose® Free Space® 51 speakers are our best performing outdoor speakers for placement in the garden, on the deck or on the patio. Connect them to your existing stereo receiver and enjoy natural sound throughout a broad listening area.

  • 360-degree sound coverage for our widest outdoor speaker coverage
  • In- or on-ground installation for landscape speaker or patio speaker placement
  • Engineered to withstand snow, sun, rain, ice and saltwater spray

Free Space 51 outdoor stereo speakers offer broad, even coverage from a design that enables 360-degree sound dispersion. A centrally located port enhances low-frequency performance to help preserve the depth and richness of music outdoors. And a domed grille resting over that port reflects high-frequency tones across the listening area.

  • Centrally located port
    • This port enhances low-frequency performance to help preserve the depth and richness of your favorite music outdoors.
  • Domed Port Grille
    • This grille is positioned over the centered port, reflecting high-frequency tones into the listening area for clear, consistent performance.

These speakers can be installed in the ground or on hard surfaces. Designed to blend in with backyard greenery, you may hardly notice them when placed within your landscaping. And for use on a patio or deck, the grooves on the underside of the base allow you to neatly tuck in wires for a simple and professional-looking installation.

Rugged construction for year-round use

With all of their features, including a downward-firing, 4½", full-range driver, these weather resistant speakers offer the durability you need outdoors with sound you'd expect indoors. Leave them outside all year long—these weather resistant speakers are engineered and tested to withstand snow, rain, salt and temperature extremes of 140° F to -22° F. They are also protected by a five-year limited warranty.

  • Downward-firing 4 ½" full-range driver
    • This weather-resistant driver is protected from the elements to help deliver high-fidelity, long-lasting sound.


  • Bose environmental testing simulates exposure to sunlight, rain, heat, ice, salt and water—proof of the extreme conditions these outdoor speakers can endure and still deliver reliable, long-lasting performance.
  • Radial design of these unique outdoor speakers enables 360-degree sound dispersion for exceptionally broad outdoor coverage.
  • Downward-firing, full-range driver (4.5") and centrally located port deliver the depth and richness of your favorite music. The weather-resistant driver makes it possible to enjoy year-round sound from a rugged landscape speaker specially designed for outdoors.
  • Domed port grille works in concert with the centered port to reflect high-frequency tones into the listening area. Enjoy clear, consistent performance for your favorite music outdoors.
  • Specially designed enclosure optimizes the speakers' overall acoustic performance for even, full-range coverage over a large listening area.
  • Polymer fiber composite driver cone ensures high quality sound reproduction that is resistant to the type of deterioration often caused by extreme conditions.
  • Centrally located port enhances low-frequency performance to deliver the depth and richness of music outdoors.
  • Sturdy weather-resistant construction allows the speakers to deliver consistent, reliable performance that withstands the rigors of year-round outdoor placement and up to 350 pounds of pressure. Five-year guarantee.
  • Green speaker cabinet designed to blend in with backyard greenery.
  • Base flange with mounting holes provides easy, solid and secure installation on hard surfaces or in the ground.
  • Three wire grooves on speaker bottom prevent the speaker from rocking on the speaker wire, allowing a professional-looking installation on decks, patios and other flat surfaces.

In the box

  • 2 Speakers
  • 4 Wire nuts


Approximate Dimensions (Each Speaker)

  • Height (each): 15"
  • Width (each): 14.5"
  • Depth (each): 14.5"

Approximate Dimensions (Pair in Carton)

  • Height (each): 15"
  • Width (each): 29"
  • Depth (each): 16"

Approximate Weight

  • Each Speaker:12 lbs
  • Pair in carton: 25 lbs.
  • Shipping (pair in carton): 35 lbs

Warranty Information:

  • Manufacturer Warranty (authorized online retailer): Limited 5 Years Parts and Labor

Features and specifications are subject to change without notice.

California customers: Proposition 65 WARNING

Downloadable Resources

Key Features

Sold As Pair/ Radial Design/ Specially Designed Enclosure/ Downward-Firing 4.25 " Full-Range Driver/ Sturdy Weather-Resistant Construction/ Green Outdoor Speaker Cabinet

More reasons to buy the Bose Free Space 51 Environmental Speakers (Pair) 31763 from Abt Electronics

  • is an authorized dealer.
  • The Bose Free Space 51 Environmental Speakers (Pair) 31763 is Brand New.
  • Abt ships this product for free!


CategoryWireless Sound
ConnectivityBare Wire
Enclosure TypeBass Reflex (Ported)
Magnetic ShieldingNo
Max Power Handling10W - 100W
Speaker TypeOutdoor
Woofer Size (inches)4.25
Height (inches)14.2
Width (inches)12.6
Depth (inches)12.6


Check here if you only want to add the selected accessories
to the cart and click the "add to cart" button for this item.


Questions & Answers