Polk Audio Atrium 4 Outdoor Speakers with Powerful Bass (Pair, Black), All-Weather Durability, Broad Sound Coverage, Speed-Lock Mounting System
Published on: May 30, 2025$199.00
The compact Atrium 4 loudspeaker produces high fidelity sound quality anywhere you want great sound. Its small size makes it ideal for tight, out-of-way installations. With an aluminum dome tweeter and polypropylene cone driver in each speaker enjoy deep, accurate bass and smoother response. Polk’s patented Dynamic Balance and Klippel Optimization technologies ensure perfect material performance, eliminating driver and tweeter “artifacts” for more realistic sound reproduction at high and low volume levels. The weatherproof cabinet features a rustproof aluminum grille, rustproof aluminum bracket, and stainless steel/brass hardware that can endure seasonal change and provide great indoor speaker-quality sound for years of outdoor listening enjoyment. Quick and easy to install with Polk’s Speed Lock Mounting system.
EASY INSTALLATION – One-click speed-lock mounting bracket offers anti-slip, one-handed installation. Mount these speakers vertically or horizontally to deliver optimal sound in different setups
EASY SETUP – Polk’s gold plated 5-way biding post can easily connect to any modern AVR or amplifier
ALL WEATHER CERTIFICATION – The speaker for all seasons. With rugged durability and premium build, these speakers can effortlessly withstand all elements including extreme temperatures and heavy rain
EXCEPTIONALLY GREAT SOUND – High fidelity sound for small-to-medium outdoor areas. Atrium 4 can be installed in any open space – by a pool, on the patio, in the sunroom, or fit anywhere in the backyard
ULTRA COMPACT – Compact outdoor loudspeaker with a 4.5” dynamic balance polypropylene woofer, ¾” anodized aluminum dome tweeter
Customers say
Customers find these outdoor speakers deliver excellent sound quality, with one comparing them to a Sonos sound-bar, and appreciate their value for money as budget-friendly options. The speakers are easy to install, with one noting the speed-lock mounting system, and customers praise their build quality, particularly the fantastic finish and durability in outdoor conditions. They work well on patios and decks, and customers like their compact size and appearance, with one highlighting the wall mount bracket design. The weather resistance is impressive, with customers reporting they’ve withstood heavy thunderstorms and Florida’s heat and humidity.
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