The Atrium 5 sits a step up the outdoor range, and the larger mid-woofer buys real low-frequency reach rather than just a bigger box on the wall.
Outdoors there are no walls or ceiling to reinforce bass, so every hertz of extension has to come from the cabinet itself. Dropping lower than the compact model is what keeps music sounding whole in an open garden.
Sensitivity rises slightly too, which means the same amplifier plays louder before it starts working hard. Across several pairs on one zone that difference compounds.
Certification against salt fog, immersion and corrosion is shared with the rest of the range, so coastal installations are within its brief rather than a risk taken with it.
Polk Audio Atrium 5 official product page
| ITEM | DESCRIPTION |
|---|---|
| Larger mid-woofer | Real low-frequency reach where no room boundaries assist. |
| Higher sensitivity | The same amplifier plays louder before working hard. |
| Certified weather resistance | Salt fog, immersion and corrosion tested. |
| Coastal capable | Rated for installations near salt air rather than sheltered gardens. |
| Supplied as a pair | A complete stereo zone in one box. |
| DETAIL | VALUE |
|---|---|
| Driver complement | 1 x 5" (12.7 cm) Mid/Woofer, 1 x 0.75" (1.91 cm) Tweeter |
| Frequency response | 60 Hz - 25,000 Hz |
| Sensitivity | 90 dB (1 watt @ 1 meter) |
| Nominal impedance | 8 ohms |
| Recommended amplifier power | 10 watts - 100 watts per channel |
| Dimensions | Height 26.19 cm, Width 17.15 cm, Depth 19.69 cm |
| Weight | 2.09 kg per speaker |
| Weather rating | All-Weather certified; exceeds ASTM D5894-UV Salt Fog, Mil Standard 810 Immersion, and Mil-Std 883 Method 1009.8 |
| Sold as | Pair |
| ITEM | QUANTITY |
|---|---|
| Atrium 5 outdoor speaker | Pair |
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