Bosch LBD1938/00, 480W, Plena Booster Amplifier - Each
Key Features
Product Description
The Bosch LBD1938/00 is a 480 W professional power amplifier designed for demanding public address (PA), background music, and voice evacuation applications. It delivers powerful, high-quality audio performance and supports 70 V, 100 V, and low-impedance (4 Ω / 8 Ω) speaker systems, making it ideal for large commercial and industrial installations.
The amplifier features dual balanced XLR inputs with priority switching, a 100 V line input for slave operation, and XLR loop-through outputs for seamless system expansion. It also supports 24 V DC battery backup and pilot tone supervision, ensuring uninterrupted operation during power failures and emergency situations. Built-in short-circuit, overload, and thermal protection, along with temperature-controlled front-to-back forced-air cooling, provide reliable performance even under continuous high-power operation.
Housed in a 19-inch, 3U rack-mount chassis, the LBD1938/00 is an ideal solution for airports, railway stations, shopping malls, stadiums, factories, warehouses, schools, hotels, places of worship, and other large commercial PA installations requiring dependable, high-power audio amplification.
Specification
| Details | |
|---|---|
| Model | Bosch LBD1938/00 |
| Product Type | Professional Power Amplifier |
| Rated Output Power | 480 W RMS |
| Amplifier Type | Booster Amplifier |
| Frequency Response | 50 Hz – 20 kHz (+1 / -3 dB) |
| Total Harmonic Distortion (THD) | <1% @ Rated Output, 1 kHz |
| Signal-to-Noise Ratio | >90 dB |
| Line Inputs | 2 × Balanced XLR |
| Input Sensitivity | 1 V |
| Input Impedance | >20 kΩ |
| 100 V Line Input | Yes (Slave Operation) |
| Loop Through Output | 2 × XLR |
| Speaker Outputs | 100 V, 70 V, 4 Ω & 8 Ω |
| Gain | 40 dB |
| Power Supply | 230 V AC ±10%, 50/60 Hz or 24 V DC |
| Maximum Power Consumption | 1600 VA |
| Battery Backup | 24 V DC |
| Pilot Tone Supervision | Supported |
| Cooling | Temperature-Controlled Forced-Air Cooling |
| Dimensions (H × W × D) | 145 × 432 × 370 mm (19-inch, 3U Rack Mount) |
| Weight | 25 kg |
| Mounting | 19-inch Rack Mount (3U) |
| Color | Charcoal |
| Operating Temperature | -10°C to +55°C |
| Storage Temperature | -40°C to +70°C |
| Relative Humidity | <95% |
| Included Accessories | Power Cord, Rack Mount Brackets, User Manual |