Downward-firing 4-1/2" Full-range Drivers: Each woofer cone
combines a pulp and plastic mixture with waterproofing agents for high-quality
sound reproduction that is resistant to the type of deterioration often caused
by extreme conditions. Because the drivers are downward-firing, they are further
protected from the elements to help deliver high fidelity, long-lasting sound.
Each woofer uses a treated cloth surround.
Radial Design: The Free Space 51 speakers offer
exceptionally broad, even coverage thanks to a radial design that enables
360-degree sound dispersion.
Environmentally Tested: While all Bose speakers are
thoroughly tested, the extreme demands placed on outdoor speakers require an
even more rigorous evaluation. Bose engineers re-create extreme environmental
conditions, like exposure to sunlight, rain, heat, ice, even corrosive salt and
fog. They also simulate years of exposure to these conditions to ensure that
these speakers can deliver reliable, long-lasting performance.
Green Speaker Enclosures: The speaker enclosures blend in
with backyard greenery.
Centrally Located Ports: The centrally located port on each
enclosure enhances low-frequency performance to help preserve the depth and
richness of your favorite music outdoors.
Domed Port Grilles: Positioned over the centered port, this
grille reflects high-frequency tones into the listening area to help deliver
clear, consistent performance.
Wire Grooves: Wire grooves on the bottom of each speaker
enclosure prevent the speaker from rocking on the speaker wire and enables a
professional-looking installation on decks, patios and other flat surfaces.
Base Flanges with Mounting Holes: The mounting holes in each
base flange provide easy, solid and secure installation on hard surfaces or in
In-ground Installation: Each speaker can be buried up to
7-1/4" in the ground. With the speakers buried, 7-5/8" of each enclosure will
remain above ground.
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.