Atrium 4

Name: Atrium 4
Brand: Polk Audio
SKU: 112577-03-00-001
Price: 199.00 USD
Availability: InStock

Outdoor Speakers with 4.5" Drivers

$199.00 / pair

Big Fidelity, Small Speaker. The Compact Atrium4 loudspeaker produces high fidelity sound quality anywhere you want great sound. Its small size makes it ideal for tight, out-of-way installations.

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

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$199.00 / pair

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Atrium 4

$199.00 / pair

Great outdoor sound

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.

Key Technologies

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).

Compare Polk Outdoor Speakers

This Product

Atrium 4

Outdoor Speakers with 4.5" Drivers

$199.00 / pair

4.5" Dynamic Balance® polypropylene woofers

3/4" Anodized Aluminum Dome tweeter

Speed-Lock Mounting system

Quality sound for small-to-medium, outdoor spaces.

Atrium 6

Outdoor Speakers with 5.25" Drivers

$399.00 / pair

5.25" Dynamic Balance® polypropylene woofers

1" Anodized Aluminum Dome tweeters

Speed-Lock Mounting system

Big, high-quality sound for medium-to-large, outdoor spaces.

Atrium 5

Outdoor Speakers with 5" Drivers

$299.00 / pair

5" Dynamic Balance® polypropylene woofers

3/4" Anodized Aluminum Dome tweeter

Speed-Lock Mounting system

Big, quality sound for small-to-medium, outdoor spaces.

Atrium 8 SDI

High-Performance Outdoor Speaker with 6.5" Driver

$249.00

Atrium 4

Details & Specifications

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