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Atrium 4

Name: Polk Audio Atrium 4
Brand: Polk Audio

Polk Audio

Atrium Series1991 – Present

LoudspeakersOutdoor Speakers

Estimated price (community-sourced)

$139 - $199

About the Atrium 4

The Polk Audio Atrium 4 are compact, all-weather certified outdoor speakers designed for durable performance in harsh environments, exceeding military specs for UV, salt fog, immersion, and corrosion (ASTM D5894-UV Salt Fog, Mil Standard 810, Mil-Std 883). Featuring a 4.5" Dynamic Balance mineral-filled polypropylene mid/woofer with butyl rubber surround and a 0.75" anodized aluminum dome tweeter with neodymium magnet and rubber surround, they deliver punchy bass, clear midrange, and smooth highs with wide dispersion via a steeply-angled baffle. The sealed, mineral-filled polypropylene cabinet with molded-in bracing, aluminum grilles, stainless steel/brass hardware ensures rust-proof longevity. Easy 180° Speed-Lock mounting system allows one-handed installation in horizontal/vertical orientations. Gold-plated 5-way binding posts provide secure connections. Ideal for patios, poolsides, or indoor use like kitchens. 5-year warranty on cabinet and drivers.

Specifications

Key Specifications

Sensitivity: 89 dB

Impedance: 8Ω

Full structured specifications are available to members.

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