Polk Audio Atrium 4 All-Weather Outdoor Speaker
Compact weather-resistant outdoor speaker delivering clear, balanced sound with wide dispersion for patios, gardens, and outdoor entertainment spaces.
The Polk Audio Atrium 4 is a versatile outdoor speaker designed to provide high-quality audio performance in a wide range of environments. Built with rugged, weather-resistant materials, it is engineered to withstand rain, humidity, extreme temperatures, and UV exposure, making it ideal for year-round outdoor use.
Featuring a 4.5-inch mineral-filled polypropylene woofer and a 0.75-inch anodized aluminium dome tweeter, the Atrium 4 delivers clear highs, detailed midrange, and surprisingly full bass for its compact size. Its wide dispersion design ensures consistent sound coverage across outdoor areas, making it suitable for both background music and active listening.
The speaker includes Polk’s Speed-Lock™ mounting system, allowing quick and secure installation with easy directional adjustment. This flexibility makes it simple to position the speakers for optimal sound coverage in various outdoor setups.
Designed for both durability and performance, the Atrium 4 combines robust construction with refined audio engineering, making it a reliable choice for residential and commercial outdoor audio installations.
| Speaker Type | Outdoor / all-weather speaker |
|---|---|
| Woofer | 4.5" mineral-filled polypropylene |
| Tweeter | 0.75" anodized aluminium dome |
| Frequency Response | 75 Hz – 20 kHz |
| Sensitivity | 89 dB |
| Nominal Impedance | 8 ohms |
| Recommended Amplifier Power | 10 – 80 W |
| Dimensions (H × W × D) | 211 × 152 × 173 mm |
| Weight | 1.8 kg (per speaker) |
| Mounting | Wall mount with adjustable bracket |