Polk Audio Atrium 4

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.

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).

Specifications

OVERALL

Total Pieces - 1

Cabinet Warranty - 5 Years - Original Purchaser Only

Drivers Warranty - 5 Years - Original Purchaser Only

Carton 1 - 4.31 kg

ON-WALL BOOKSHELF AND SOUNDBARS

Qty Included - Pair

Height - 21.91 cm

Width - 14.45 cm

Depth - 16.99 cm

Weight - 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 

Speaker Inputs - (2) Pair of 5-way Binding Posts - Gold-Plated