POLK Atrium 4


All Weather Outdoor Speaker

  • Amplifier requirements 10-80W
  • Aluminium grille, ABS Chassis, Brass Hardware – Rust free
  • Compact design – great sound
  • Simple to install
  • **Sold in pairs



4.5″ Drivers and .75″ Tweeters

Andized aluminium dome tweeters with rubber surrounds and aerated polypropylene cones are engineering to provide years of dependable outdoor performance.

10-80 Watts per Channel

The Compact Atrium4 loudspeaker produces high fidelity sound quality anywhere you want great sound. It’s small size makes it ideal for tight, out-of-way installations.

All-Weather Certified

Built to withstand the worst elements—salt-fog, UV, extreme temperatures or heavy rains, you name it.

Speed Lock Mounting System

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

Broad Coverage Compact Design Fills Large Outdoor Spaces

Planted in your landscaping, hung from an awning or installed anywhere else around your home, Atrium Series speakers are built to withstand the elements and fill large outdoor spaces with high quality sound.

Aluminium with Stainless Steel and Brass Hardware

Aluminium grilles and bracket, with stainless steel and brass hardware means no rust—ever.


Colour Options

Black, White

Woofer size

1x 4.25inch

Tweeter size

1x 0.75inch


8 ohms

Power Handling

80W (continuous)

Housing Material

Mineral filled polypropylene

Grille Material


Dimensions (W x H x D)

14.4 x 21.9 x 17 cm


Product Sheet


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