| | L20P | BS21 |
| Driver (Inch) | 2*10"LF+2*2"HF | 1x21"LF |
| DC-Impedance | 19.2Ohm | 6.4Ohm |
| Frequency Range (Hz/-10db) | 70-20k Hz | 30-90 Hz |
| Power (W) | 600W | 750W |
| Peak Power (W) | 2400W | 3000W |
| Sensitivity (dB/m.w) | 101dB | 101dB |
| Max SPL (dB) | 135-147dB | 135dB |
| Coverage (H*V) | 110º horizontal, 15º vertical | / |
| Size (cm) | 72x29x35 | 80x60x80 |
| N.W. (kg) | 26 | 60 |
| | D6D |
| Minimum Load Impedance (Ω)/DCRmin | 4.8/4.8 |
| Max Output (W/230v/40ms) | 4000/4000 |
| THD (8Ω/100W/100Hz) | <0.03% |
| Frequency Response (8Ω/100W/±0.5dB) | 10Hz-22kHz |
| SNR (8Ω/100Hz/A-weighting) | 105dB |
| Damping Factor (8Ω/300W/100Hz) | >1000 |
| Slew Rate (8Ω/300W/100Hz) | >100V/us |
| Electric Energy Efficiency (8Ω/300W/100Hz) | >85% |
| Idle Power (230V) | 20w |
| Power Factor (1000W/230V/50Hz) | >0.85 |
| Operation Range | 350kHz |




















