| Brand | Infinity |
| Model | SM255B |
| Drivers | TWO - 5.25" nylon laminated with cast-alloy baskets |
| Woofer | 15" nylon laminated w/cast alloy basket |
| Woofer diameter (mm) | 381 |
| Midrange | TWO - 5.25" nylon laminated with cast-alloy baskets |
| Midrange diameter (mm) | 133 |
| Tweeter | 1" high-output fastglass fiberglass dome |
| Tweeter diameter (mm) | 25 |
| Frequency response | 42 Hz – 20000 Hz; 28 Hz – 22000 Hz +3 −3 dB |
| Enclosure | |
| Sensitivity (dB) | 103 |
| Impedance (Ω) | 8 |
| Recommended amplifier power, least (W) | |
| Recommended amplifier power, most (W) | |
| Built-in amplifier power (W) | |
| Height (mm) | |
| Width (mm) | |
| Depth (mm) | |
| Weight (kg) | |
