Bosch LBB1938/30 Power Amplifier
The Bosch LBB1938/30 Power Amplifier is a high-performance, professional-grade audio solution designed to deliver exceptional power, clarity, and reliability for demanding public address and background music systems. With an impressive 480 watts of output power, this amplifier is built to handle large-scale installations where consistent, high-quality sound coverage is essential.
Engineered with Bosch’s renowned expertise in professional audio systems, the Bosch LBB1938/30 Power Amplifier offers a perfect balance of power, flexibility, and durability. It is an ideal choice for system integrators and businesses looking to deploy robust audio solutions in environments such as airports, shopping malls, convention centers, educational institutions, warehouses, and large commercial facilities.
At the core of the Bosch LBB1938/30 Power Amplifier is its powerful 480W output capability, which ensures strong and uniform audio distribution across extensive areas. Whether used for announcements, paging, or background music, this amplifier delivers clear, intelligible sound that reaches every corner of the space without distortion.
One of the key strengths of the Bosch LBB1938/30 Power Amplifier is its exceptional versatility. It supports both low-impedance (4Ω/8Ω) and high-impedance (70V/100V) speaker systems, allowing it to integrate seamlessly into a wide variety of audio setups. This flexibility makes it suitable for both new installations and system upgrades, enabling scalable and future-proof audio solutions.
The Bosch LBB1938/30 Power Amplifier features multiple input options, making it easy to connect microphones, music sources, and audio processors. This ensures that users can create a comprehensive audio system capable of handling both live announcements and continuous music playback. Its ability to adapt to different input sources makes it a valuable component in any professional AV setup.
In terms of sound quality, the Bosch LBB1938/30 Power Amplifier excels with low distortion and high signal clarity. It is designed to maintain audio integrity even at high output levels, ensuring that speech remains clear and music sounds rich and dynamic. This level of performance is critical in professional environments where clear communication and high-quality audio are essential.
Reliability is a hallmark of Bosch products, and the Bosch LBB1938/30 Power Amplifier is no exception. It is equipped with advanced protection features, including overload protection, short-circuit protection, and thermal protection. These safeguards ensure safe operation and protect both the amplifier and connected speakers from potential damage, enhancing system longevity.
The Bosch LBB1938/30 Power Amplifier robust and rack-mountable design allows for easy installation into standard equipment racks, making it ideal for organized and efficient system setups. Its durable construction ensures that it can withstand the demands of continuous operation in professional environments.
Ease of use is another important advantage of the Bosch LBB1938/30 Power Amplifier. The intuitive front panel controls and clear status indicators allow users to monitor performance and make adjustments quickly and efficiently. This user-friendly design simplifies operation and reduces the need for technical expertise.
Energy efficiency is also a key feature of Bosch LBB1938/30 Power Amplifier. Despite its high power output, it is designed to operate efficiently, helping to reduce energy consumption and operational costs. This makes it an economical choice for large installations that require continuous operation.
The Bosch LBB1938/30 Power Amplifier is built to deliver long-lasting performance. Its high-quality components and rugged construction ensure reliability over time, even in demanding conditions. This makes it a dependable solution for critical audio applications where downtime is not an option.
Whether you are designing a new large-scale PA system or upgrading an existing installation, the Bosch LBB1938/30 Power Amplifier offers unmatched performance, flexibility, and reliability. Its powerful output and advanced features make it an essential component for professional audio systems that demand excellence.
Choose the Bosch LBB1938/30 Power Amplifier to experience ultimate power, superior sound quality, and trusted Bosch reliability—ensuring your audio system performs at its best, every time.
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Features
- Powerful 480W output for large-scale audio systems
- Supports 70V/100V and 4Ω/8Ω speaker configurations
- Crystal-clear audio with low distortion
- Multiple input options for flexible connectivity
- Advanced protection: overload, short circuit, thermal
- Reliable Bosch engineering for professional use
- Rack-mountable design for easy integration
- User-friendly controls and status indicators
- Ideal for PA systems, paging, and background music
- Energy-efficient performance for continuous operation
Specifications
| Specification | Details |
|---|---|
| Product Name | Bosch LBB1938/30 Power Amplifier |
Electrical
| Parameter | Specification |
|---|---|
| Mains Power Supply Voltage | 220/230 VAC ±10%, 50/60 Hz |
| Inrush Current | 19 A |
| Max Power Consumption | 2200 VA |
Battery Power Supply
| Parameter | Specification |
|---|---|
| Voltage | 24 VDC +15% / -15% |
| Max Current | 30 A |
Performance
| Parameter | Specification |
|---|---|
| Output Power (RMS / Max) | 480 W / 720 W |
| Power Reduction on Backup | -1 dB |
| Frequency Response | 50 Hz – 20 kHz (+1 / -3 dB @ -10 dB ref. rated output) |
| Distortion | <1% @ rated output power (1 kHz) |
| Signal-to-Noise Ratio | >90 dB (flat at max volume) |
Line Inputs
| Parameter | Specification |
|---|---|
| Number of Inputs | 2 x |
| Connector | 3-pin XLR, balanced |
| Sensitivity | 1 V |
| Impedance | 20 kΩ |
| CMRR | >25 dB (50 Hz – 20 kHz) |
| Gain | 40 dB |
100V Input
| Parameter | Specification |
|---|---|
| Connector | Screw, unbalanced |
| Sensitivity | 100 V |
| Impedance | 330 kΩ |
Line Loop-Through Output
| Parameter | Specification |
|---|---|
| Number of Outputs | 2 x |
| Connector | 3-pin XLR |
| Nominal Level | 1 V |
| Impedance | Direct connection to line input |
Loudspeaker Outputs
| Parameter | Specification |
|---|---|
| Number of Outputs | 3 x |
| Connector | Screw, floating |
| Direct Output | 100 V, 70 V, 8 Ohm |
| Priority Output | 100 V or 70 V (input 1, internally selectable) |
| Music Output | 100 V or 70 V (internally selectable) |
Power Consumption
Mains Operation
| Mode | Consumption |
|---|---|
| Max Power | 990 W (-3 dB), 715 W (-6 dB), 510 W |
| Pilot Tone* | 110 W |
| Idle | 25 W |
24 VDC Operation
| Mode | Consumption |
|---|---|
| Max Power | 32 A (770 W) |
| 26 A (625 W) -3 dB | |
| 18 A (430 W) -6 dB | |
| Pilot Tone* | 3.8 A (91 W) |
| Idle | 0.7 A (17 W) |
*Pilot tone: 20 kHz at -20 dB with maximum loudspeaker load
Mechanical
| Parameter | Specification |
|---|---|
| Dimensions (H x W x D) | 145 x 430 x 370 mm |
| Form Factor | 19″ rack, 3U height (with feet) |
| Weight | Approx. 25 kg |
| Mounting | Standalone or rack-mounted |
| Color | Charcoal |
Environmental
| Parameter | Specification |
|---|---|
| Operating Temperature | -10°C to +55°C |
| Storage Temperature | -40°C to +70°C |
| Relative Humidity | <95% |
| Acoustic Noise Level | <48 dB SPL @ 1 m (max output) |
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