Bosch PLM-4P125 4x125W Power Amplifier for Multi-Channel PA Systems
The Bosch PLM-4P125 is a 4-channel 125 W per channel power amplifier designed for multi-zone public-address systems. It provides reliable amplification with low distortion, flexible speaker outputs, and integration with Plena audio systems, making it suitable for offices, schools, retail venues, hospitals, and other large facilities requiring professional multi-channel PA performance.
Features of Bosch PLM-4P125
- 4 independent channels with 125 W RMS per channel
- High-efficiency Class-D amplification
- Flexible speaker outputs: 100 V, 70 V, or 8 Ω
- Low distortion and high signal-to-noise ratio
- Front-panel LED indicators for power, signal, and clipping
- Protective circuitry for short-circuits, overload, and thermal protection
- Integrates with Bosch Plena mixer and call station systems
- Rack-mountable design for professional installations
- Compact and lightweight for easy deployment
- Fan-cooled with temperature monitoring
Applications of Bosch PLM-4P125
- Multi-zone offices and corporate buildings
- Schools, universities, and educational campuses
- Retail stores, shopping centers, and commercial venues
- Hospitals, clinics, and healthcare facilities
- Hotels, restaurants, and hospitality environments
- Conference rooms, auditoriums, and auditoria
- Warehouses, factories, and industrial facilities requiring multi-channel PA
Specifications of Bosch PLM-4P125
| Model | Bosch PLM-4P125 |
| Channels | 4 independent channels |
| Output Power per Channel | 125 W RMS |
| Amplifier Type | Class-D high-efficiency |
| Speaker Outputs | 100 V, 70 V, 8 Ω |
| Frequency Response | 20 Hz – 20 kHz (+/-1 dB) |
| Distortion (THD) | < 0.1% at rated output |
| Signal-to-Noise Ratio | > 90 dB |
| Cooling | Fan-cooled with thermal monitoring |
| Protection | Overload, short-circuit, thermal protection |
| Input Sensitivity | 0.775 V / 1 V line level |
| Power Supply | 230 V AC ±10%, 50/60 Hz |
| Dimensions (H × W × D) | 88 × 482 × 350 mm (2U, 19″ rack) |
| Weight | Approx. 10.8 kg |
| Use Cases | Multi-zone PA, commercial audio, professional installations |
| Compliance | EN 60065, EMC standards |
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