Free Space® 51 environmental speakers

For a limited time


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.

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.


  • 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.



  • Each speaker:14.2" H x 12.6" W x 12.6" D (24 lbs)
  • Pair in carton:15" H x 29" W x 16" D (25 lbs)

In the box

  • 2 Speakers
  • 4 Wire nuts

Other items you may need

  • Speaker wire (For help choosing the appropriate gauge, see the owner's manual.)
Rated 5 out of 5 by from Exactly what I expected I have a a fairly large outdoor area, and I instead a pair of these along with two pair of Bose 251's, and my jubilation can't be contained. These speakers sound great as they cover such a broad area and the sound reflects off the ground and makes you feel surrounded by the sound instead of it being directed at you. I will add a second pair to complete my all ready amazing out door space as if you are trying to provide sound to two patios, a pool, a pergola, and fire pit space you need the quality and power of Bose to do so.
Date published: 2016-08-15
Rated 5 out of 5 by from Amazing - Best Outdoor Speakers I have had these speakers for 8 years - go no further to research which outdoor speakers to buy. These are clear at ANY volume. Winter, summer, they are built to last.
Date published: 2016-07-13
  • 2016-10-24T07:31CST
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What is the appropriate speaker wire for these speakers?

You must first determine the distance of your speakers from your receiver. That will help you choose the appropriate gauge (thickness) of speaker wire. If your installation requires the wire to be buried in the ground, use direct-burial rated cable or run the wire through a PVC piping channel. Always use moisture-resistant speaker wire.

What conditions and temperature extremes can these speakers withstand?

FreeSpace 51 speakers are designed to withstand:

  • Sun, high humidity (rain and snow), salt and fog
  • Temperature extremes (-40° F to 158° F; -40° C to 70° C)
  • Permanent outdoor installation

Can these speakers be combined with my Lifestyle or SoundTouch system?

Yes. You can combine these with the SA-5 amplifier to expand your Lifestyle SoundTouch entertainment system or SoundTouch home theater system to a second room or outdoors.

What is the warranty on these speakers?

FreeSpace 51 speakers carry a five-year limited warranty.



Owner's guide