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. Speakers that have you covered And they often can’t reproduce the low frequencies that provide impact. … Bose outdoor speakers are designed for harsh conditions. These weather resistant speakers are engineered and tested to withstand snow, rain, salt and temperature extremes of 140° F to -22° F.