เครื่องขยายเสียง ยี่ห้อ BOSCH รุ่น PLE-4MA240-CN
- Class-D mixer amplifier, no active cooling
- 3 microphone inputs, one input switchable to line level with priority
- 3 music source inputs, including one 3.5mm minijack input
- Telephone and 100V emergency input
- 24V DC output for loundspeaker volume control override
| Voltage | 220-230 VAC, ±10%, 50/60 Hz |
| Rated Output (0 dB) | 360W |
| -3dB | 180W |
| Idle | 20W |
| Frequency response | 70Hz to 18kHz (+1/‑3dB @‑10dB ref. rated output) |
| Distortion | <1% @ rated output power, 1kHz |
| Bass control | +/-12dB (frequency is setting dependent) |
| Treble control | +/-12dB (frequency is setting dependent) |
| Mic/line input | 1x |
| Input 1 (Push-to-talk contact with ducking functionality) | 5-pin, Euro style, balanced, phantom |
| Mic input | 2x |
| Input 2-3 | Combo (XLR or TRS), balanced, phantom |
| Sensitivity | 1mV +1/-3dB (mic), 300mV +1/-3 dB (line) |
| Impedance | >1 kOhm (mic); >1.5 kOhm (line) |
| S/N (flat at max volume) | >60dB (mic), >70dB (line) |
| S/N (flat at min volume/muted) | >75dB |
| CMRR (mic) | 60dB |
| Headroom | 25dB |
| Phantom power supply | 18VDC |
| Music input | 3x |
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