Polk Audio Atrium4 Outdoor Speaker - pair
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Polk Audio Atrium4 Outdoor Speaker — Pair
Big fidelity from a compact design. The Polk Audio Atrium4 is a two-way all-weather outdoor loudspeaker that delivers high-fidelity sound quality wherever you want great audio — by the pool, around the patio, in the garden, or tucked into a tight installation spot. Built to Polk’s all-weather certification standard, the Atrium4 exceeds military and industrial environmental specifications for UV, salt fog, immersion, and corrosion resistance, ensuring years of reliable performance through every season.
The Atrium4’s Speed-Lock™ mounting system allows safe, one-handed installation even in difficult locations. Available in durable weatherproof Black or White paintable finishes.
Key Features
- 4.5" (11.43cm) Dynamic Balance® mineral-filled polypropylene cone with butyl rubber surround — long-throw design for surprising bass from a compact cabinet
- 3/4" (19mm) anodised aluminium dome tweeter with neodymium magnet for better power handling and smooth high-frequency response
- All-weather certified — exceeds ASTM D5894 UV Salt Fog, MIL-STD-810 Immersion, and MIL-STD-883 salt/corrosion specifications
- Broad coverage baffle design — steeply-angled for maximum mid/high-frequency dispersion over large outdoor areas
- Speed-Lock™ mounting system — 180° adjustable bracket for easy one-handed installation
- Dynamic Balance® & Klippel optimisation — eliminates driver artefacts for accurate sound at all volume levels
- Gold-plated 5-way binding posts for secure, dependable connections
- Aluminium grille and bracket with stainless steel and brass hardware — rust-free construction
- Available in Black or White — paintable weatherproof finish
Specifications
Specifications sourced from Polk Audio. Subject to change without notice.
| Specification | Detail |
|---|---|
| Drivers | |
| Woofer | 4.5" (11.43cm) Dynamic Balance® mineral-filled polypropylene cone, butyl rubber surround |
| Tweeter | 3/4" (19mm) anodised aluminium dome with neodymium motor structure |
| Performance | |
| Frequency Response | 75Hz – 20kHz |
| Sensitivity (1W/1m) | 89dB |
| Nominal Impedance | 8Ω |
| Recommended Amplifier Power | 10–80W per channel |
| Cabinet & Mounting | |
| Cabinet Material | Mineral-filled polypropylene with moulded-in bracing |
| Grille & Bracket | Aluminium grille; stainless steel and brass hardware |
| Mounting System | Speed-Lock™ — 180° adjustable bracket |
| Binding Posts | Gold-plated 5-way |
| Dimensions (H × W × D) | 219 × 145 × 170mm (8-5/8" × 5-11/16" × 6-11/16") |
| Weight (per speaker) | 1.63kg |
| General | |
| Weather Rating | All-weather certified (ASTM D5894, MIL-STD-810, MIL-STD-883) |
| Finish Options | Black / White (paintable) |
| Sold As | Pair |
| Country of Origin | China |
| UPC (Black) | 747192100004 |
| UPC (White) | 747192100011 |
Caring for your Speakers and Amplifiers
To Keep your equipment safe these are some best practices to note. Please be advised that this is only to reduce the risk of misuse and is not an exhaustive list.
Speakers
- Speaker terminals are marked red and black, ensure your amplifier to the speakers are wired on the same colours
- Ensure no loose speaker wire from the red touches a loose wire from the black as this will lead to a short circuit and damage either the speaker, the amplifier or both.
- Not all speakers are designed to play at max volume, kindly consider the pairing of your amplifier and speakers
- Speaker cabinets cannot be replaced please handle with care.
AV & Stereo Amplifiers
- If your amplifier has HDMI ports, ensure all devices are off before plugging in the HDMI cable
- Turn off the amplifier before swoping out or adding speaker cable
- Amplifiers generate heat, place them in a well ventilated space. if possible avoid having anything on top of the unit.
- adding a surge protector can assist with power dips which are likely to damage your devices. Isotek and Furman are industry standard.
- Dusty environments can sometimes lead to accumulation of dust in the electronic components that might affect heat regulation
Shipping & Returns
- Free shipping on orders over R500 within the country.
- Standard delivery within 2–5 business days. Delays will be communicated. This might vary slightly depending on your location.
- Return items in original condition for a full refund. (unopened state)
- Returns that are open/unboxed will be subject to a handling fee. Refunds will only be processed after testing the unit.