| STT | MODEL NO. | RB-15 | RB-18 | RB-218 |
| 1 | The components | LF 15″x 1 | LF 18″ x 1 | LF 18″ x 2 |
| 2 | Frequency response range | 35Hz-500Hz (± 3dB) | 30Hz-450Hz (± 3dB) | 28Hz-400Hz (± 3dB) |
| 3 | Sensitivity | 103dB | 105dB | 107dB |
| 4 | Rated power | 500W | 600 W | 1200W |
| 5 | Maximum capacity | 1000W | 1200W | 2400W |
| 6 | Maximum pressure level | 120dBcontinuous,126dBpeak | 129dB dB continuous, 130dB peak | 135dB continuous, 136dB peak |
| 7 | Impedance | 8 (Ω) | 8 (Ω) | 4 (Ω) 8 (Ω) |
| 8 | Speaker material | 18mm high density fiberboard | ||
| 9 | Surface treatment | Glossy paint is suitable for humid environments | ||
| 10 | Connection mode | Two NL4 sockets 1+ 1- | ||
| 11 | Size | 495x605x505mm | 565x692x595mm | 1068x780x568mm |
| 12 | Weight | 37.5kg | 41.8kg | 75kg |
