Summary: I am picky when it comes to sound. Purchased these after looking at Yamaha and Bose in the same price range. I am not disappointed. Bass was my biggest concern, Have them installed under the eaves of my roof and you can definitely notice the bass. Very crisp as well. Quit impressed!
Summary: If you have tried the Atrium4 speakers and desire a bit more bass... these are worth the price. Outstanding quality and sound. Very pleased with this purchase. They definitely fill the backyard with more sound and better tone. These were literally out of the box and mounted in less than four minutes. The mounting brackets for the Atrium5 speakers are a little longer than the Atrium4 brackets, but the screw holes are in the exact same position. Nice!
Summary: I had a pair of Polk Atrium 45 speakers for years and never had a complaint. You couldn't beat the sound quality for the money. However after about eight year of solid performance I was considering upgrading. While walking through my recently joined shopping club I saw a pair of Bose 151 speakers. The display model sounded great in the store so I decided to make the change. Well I put them up the instant I got home and couldn't believe the difference.
Summary: The installation bracket comes off which makes installing these pretty easy. #10 screws and drywall anchors (if necessary) are required to install but aren't included. The speakers sound great.