Polk Audio Atrium 4
Big Fidelity, Small Speaker. The Compact Atrium4 loudspeaker produces high fidelity sound quality anywhere you want great sound. Its small size makes it ideal for tight, out-of-way installations.
| Brand | Polk Audio |
| Model | Atrium 4 |
| Drivers | • (1) 4.5" (11.43 cm) d (Round) - Mid/Woofer • (1) 0.75" (1.91 cm) d (Round) - Tweeter |
| Woofer | |
| Woofer diameter (mm) | |
| Midrange | |
| Midrange diameter (mm) | |
| Tweeter | |
| Tweeter diameter (mm) | |
| Frequency response | |
| Enclosure | |
| Sensitivity (dB) | 89 |
| Impedance (Ω) | 8 |
| Recommended amplifier power, least (W) | |
| Recommended amplifier power, most (W) | 10 |
| Built-in amplifier power (W) | |
| Height (mm) | 219 |
| Width (mm) | 145 |
| Depth (mm) | 170 |
| Weight (kg) | 1.63 |