Patented Dynamic Balance®

The perfect material performance, eliminating driver and tweeter "artifacts" for more realistic sound reproduction at high and low volume levels. To install, simply mount the bracket and click the speaker into place then aim it and tighten it down.

Speed Lock Mounting System

Simply mount the bracket and click the speaker into place, Aim it and tighten it down.

Outdoor speaker family

Incorporate multiple Atrium speakers together to create the ultimate outdoor speaker system.

The Atrium speaker family

For the ultimate outdoor sound system, combine multiple Atrium models to create a fully immersive listening experience with balanced coverage across large spaces. Whether you're hosting a backyard gathering or enjoying a quiet evening outside, the Atrium series offers the performance and flexibility to elevate every moment.

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Proudly engineered and designed in Baltimore, Maryland, Polk products are crafted to meet high standards of quality, performance, and reliability, ensuring a premium audio experience that is the pinnacle of American Hi-Fi.
Polk's exclusive lightweight Dynamic Balance® Polypropylene Cones deliver spectacular midrange clarity, punchy bass and high efficiency.
Atrium Series speakers exceed baseline industrial and military specifications for environmental endurance (ASTM D5894-UV Salt Fog, Mil Standard 810 Immersion, Mil-Std 883 Method 1009.8 for salt and corrosion).

Proudly engineered and designed in Baltimore, Maryland, Polk products are crafted to meet high standards of quality, performance, and reliability, ensuring a premium audio experience that is the pinnacle of American Hi-Fi.
Polk's exclusive lightweight Dynamic Balance® Polypropylene Cones deliver spectacular midrange clarity, punchy bass and high efficiency.
Atrium Series speakers exceed baseline industrial and military specifications for environmental endurance (ASTM D5894-UV Salt Fog, Mil Standard 810 Immersion, Mil-Std 883 Method 1009.8 for salt and corrosion).

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Owner's Manual-English, ES, FR
Owner's Manual-DE
Info Sheet

Expand All OVERALL

Total Pieces 1
Cabinet Warranty 5 Years - Original Purchaser Only
Drivers Warranty 5 Years - Original Purchaser Only
Original Purchaser Only Yes
Carton 1 9.5 lbs (4.31 kg)

ON-WALL BOOKSHELF AND SOUNDBARS

Qty Included Pair
Availability US Internationally
Orientation Horizontal
Vertical
Height 8.625" (21.91 cm)
Width 5.688" (14.45 cm)
Depth 6.688" (16.99 cm)
Weight 3.6 lbs (1.63 kg)
Front Array Driver Complement (1) 4.5" (11.43 cm) d (Round) - Mid/Woofer
(1) 0.75" (1.91 cm) d (Round) - Tweeter
Total Frequency Response 75 Hz 25,000 Hz
Nominal Impedance 8 ohms
Sensitivity (1 watt @ 1 meter) 89 dB
Mounting Type 180° Speed-Lock mounting system with Keyhole Slots
Available Orientations Horizontal
Vertical
Recommended Amplifier Power Per Channel 10 watts 80 watts
Audio Inputs -
Ethernet No
Speaker Inputs (2) Pair of 5-way Binding Posts - Gold-Plated

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Great outdoor sound Patented Dynamic Balance®

Features

All-Weather certified
4.5" Dynamic Balance® polypropylene woofers
3/4" Anodized Aluminum Dome tweeter
Speed-Lock Mounting system

OVERALL
Total Pieces	1
Cabinet Warranty	5 Years - Original Purchaser Only
Drivers Warranty	5 Years - Original Purchaser Only
Original Purchaser Only	Yes
Carton 1	9.5 lbs (4.31 kg)
Qty Included	Pair
Availability	US Internationally
Orientation	Horizontal Vertical
Height	8.625" (21.91 cm)
Width	5.688" (14.45 cm)
Depth	6.688" (16.99 cm)
Weight	3.6 lbs (1.63 kg)
Front Array Driver Complement	(1) 4.5" (11.43 cm) d (Round) - Mid/Woofer (1) 0.75" (1.91 cm) d (Round) - Tweeter
Total Frequency Response	75 Hz 25,000 Hz
Nominal Impedance	8 ohms
Sensitivity (1 watt @ 1 meter)	89 dB
Mounting Type	180° Speed-Lock mounting system with Keyhole Slots
Available Orientations	Horizontal Vertical
Recommended Amplifier Power Per Channel	10 watts 80 watts
Audio Inputs	-
Ethernet	No
Speaker Inputs	(2) Pair of 5-way Binding Posts - Gold-Plated

Quick Specs

Appearance
Type: Speakers
Features
Energy Star Rated: No

Owner's Manual-English, ES, FR

Owner's Manual-DE

Info Sheet

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Professional delivery and installation is available for every product we sell. We would be happy to coordinate delivery and installation for you.

Extended warranties are usually very inexpensive and can save you thousands in the future. It's simple and inexpensive to purchase extended warranties and one of the smartest ways to protect your investment.

Electronics can be large, heavy and expensive. You probably don't have the special tools or expertise needed to fix them in a crisis. If you can spare a few thousand dollars without batting an eyelash for new electronics should they break tomorrow, don't buy a warranty. But if you're like most of us, protect yourself by purchasing inexpensive extended warranties when you buy a new product and save yourself big money in the long run.

Black Atrium 4