| Brand | Infinity |
| Model | PHI51 |
| Drivers | 4 x 50mm (2") Neodymium woofer (magnetically shielded) |
| Woofer | 200mm Long-throw (shielded) |
| Woofer diameter (mm) | 200 |
| Midrange | 4 x 50mm (2") Neodymium woofer (magnetically shielded) |
| Midrange diameter (mm) | 50 |
| Tweeter | 19mm (3/4") Soft-dome tweeter (magnetically shielded) |
| Tweeter diameter (mm) | 19 |
| Frequency response | 200 Hz – 22000 Hz +3 −3 dB |
| Enclosure | |
| Sensitivity (dB) | 84 |
| Impedance (Ω) | 4 |
| Recommended amplifier power, least (W) | 25 |
| Recommended amplifier power, most (W) | 100 |
| Built-in amplifier power (W) | 100 |
| Height (mm) | 367 |
| Width (mm) | 85 |
| Depth (mm) | 120 |
| Weight (kg) | 1.3 |
