Rock Your Backyard with Outdoor Speaker Systems We saw an outdoor speaker system at the Northern Green Expo this winter that grabbed our attention. Essentially, it’s a high quality speaker system with a subwoofer that – get this – is buried in your yard, using the density of the soil to enhance the sound. How cool is that?! Subterrain woofers use the density of the soil to enhance sound. The subwoofer, paired with 2 or 4 speakers,...
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