Product description
The Atrium 45 indoor/outdoor loudspeaker offers the ultimate in flexibility, reliability and sound quality. The Atrium 45 gives you the freedom to put speakers anywhere you want high-performance sound: the kitchen, the den, the guestroom, the patio or pool, even the backyard BBQ pit.Sure, there are lots of "outdoor" speakers out there. But look at the fine print. Many of them are suitable only for placement in sheltered locations. The rugged Atrium 45 meets or exceeds stringent industry and military specifications for full exposure to the elements for years of reliable high-performance sound anywhere in and around your home. Incredible sound - anywhere you want it, with the versatile Polk Audio Atrium series of indoor/outdoor loudspeakers. Want to take great Polk Audio speaker sound outdoors? Check out the indoor/outdoor 80-watt Atrium 45s. The stainless steel and brass hardware is completely rustproof, as are the aluminum brackets that allow multiple mounting options and full 90-degree rotation: aim them to deliver the best possible sound in a variety of locations. The rustproof aluminum grilles have 55 percent open area for superior sound quality. Most importantly, the Atrium 45s rugged, weatherproof, design meets or exceeds several military specifications for water, wind, salt, and corrosion.
Inside the completely sealed enclosure is a 4.5-inch Dynamic Balance mineral-filled polymer driver with butyl rubber suspension for pumping out amazing bass, while its .75-inch soft dome tweeter with neodymium magnet broadly distributes high frequencies to cover a large area with high fidelity sound. Polk's Dynamic Balance technology produces flat frequency response, sharp detail, transparency and an ability to play program material with wide dynamic range at life-like volume levels without a hint of strain. The sound is always clean, clear, and effortless. The sculpted front baffle and rounded enclosure minimizes diffraction (sound reflecting off of hard edges) for more open and lifelike imaging.
Connect them to an amplifier or receiver using the set's gold-plated five-way speaker-level binding posts. The Atrium 45s are also voice-matched to Polk's RTi speakers, and therefore make great surrounds in a complete Polk home theater system with the ability to handle up to 80 watts per channel.
What's in the Box
Pair, Atrium 45 speakers (black), mounting brackets, manual, 2-year parts and labor warranty.
Customer reviews

2009-01-06
An Inconvenient TruthThe product is not the problem - just dealing with the vendor. Any necessary returns are difficult. Shipping was inflated at $15 UPS, but it cost me $9.00 UPS to return. After a restocking fee of 20%, a $100 purchase cost $65. in just handling and shipping, and the vendor will re-sell the item. Futhermore it may take six weeks for them to credit the return?? MY ADVICE BUY LOCAL - where a return is handled as good will and much, much simplier.
2008-12-20 outdoor speakers
Great sound, multiple mounting options. Not a stereophile, but they work for me. Enough to provide sound for a 12 x 24 deck without including the rest of the neighborhood.
2008-12-15 Nice Performers
I like the sound from these speakers, however you may want to look at the less expensive Polk offerings if you just want to have them serve to provide background music on your patio.
2008-12-04 Great outdoor speakers, awesome sound for the price!
I bought 5 pairs of these for various outdoor areas around my rambling house; the sound is just terrific, no complaints, and I'm pretty picky. Clear and crisp, even at a high volume. The design is nice, simple, quality; great connectors, sturdy brackets; was easy to attach them and wiring was a breeze.
I have read comments from others that the grilles come off too easily...owning 10 of these speakers, not a single one has had this problem; they fit securely if you put them on properly, so I guess maybe they were careless in not pushing them in firmly enough? Anyhow, I haven't experienced any problems with them.
Other than the good reviews on performance, I selected these because I could paint them to match my house. I painted all 10 speakers an oregano (dull green) color, using satin finish spray paint, and they blend in great with my house color now, and don't stand out like they would if they were white or black, which is terrific. The painting is a bit of a pain in the butt, because of needing to take things apart to do a professional job, but it was worth the trouble; they look great.
2008-11-26 Excellent speakers...somewhat directional
Excellent speakers, a lot of quality for the price. They are quite directional, so you have to be aware of the listening positions when mounting. Able to handle robust sound level and a fair amount of bass boost.