Bosch Security Systems PRS-1B500 2-Channel 250W Basic Power Amplifier #2 16:00

• BOSCH
• PRS-1B500
• S/N: 0001112
• HW: 01/03
• WK: 0637
• 880 VA/50-60 HZ
• 100-120/220-240 VAC
• NL-4827HG-10
• IEC- 60849
• BS 5839-8

Bosch PRS-1B500 2-channel 250W power amplifier. Ideal for paging, background music, and security systems. Features 70V/100V constant voltage output, high efficiency, and reliable Bosch performance. Perfect for integrators.

The Bosch Security Systems PRS-1B500 is a robust and dependable 2-channel power amplifier designed for commercial audio distribution. Engineered for clarity and reliability, this amplifier is the ideal core component for paging systems, background music, and security/emergency sound evacuation in retail stores, offices, schools, and warehouses.

With a powerful 250 Watts per channel and support for constant voltage (70V/100V) and low-impedance (4-16Ω) outputs, the PRS-1B500 offers maximum flexibility for integrators to design and deploy professional audio systems with ease.

Key Features & Benefits

• High-Performance 500W Total Output: Delivers 250W per channel (into 4Ω), providing ample clean power to drive multiple speaker zones across your facility. Ensures clear, intelligible audio for both music and critical announcements.

• Versatile Output Modes: Supports 70V / 100V constant voltage and 4-16Ω low-impedance operation. This allows you to connect long runs of multiple speakers without signal loss, simplifying system design and installation.

• Exceptional Reliability & Protection: Built with a robust toroidal transformer and comprehensive protection circuits (including short circuit, overload, and thermal protection). The PRS-1B500 is designed for 24/7 operation, ensuring your audio system is always ready when you need it most.

• High-Efficiency Class-D Design: Generates less heat, consumes less power, and reduces operating costs compared to traditional Class AB amplifiers. Its compact 1U rack-mount design saves valuable space in equipment closets.

• Priority Input for Emergency Paging: Features a dedicated priority input on each channel. When activated, this input overrides all other audio sources, guaranteeing that critical paging or emergency announcements are heard clearly.

• Comprehensive Input/Output Connectivity: Includes balanced XLR and 3-pin plug-in terminal block inputs for flexible source connection. Outputs are handled via secure plug-in terminal blocks for reliable speaker wiring.

• Rack-Mountable & Convection Cooled: Standard 19-inch, 1U rack-mount design for easy integration into any AV rack. Fanless, convection cooling ensures silent operation, making it perfect for noise-sensitive environments.

Technical Specifications at a Glance

• Channels: 2

• Power Output: 2 x 250W (4Ω), 2 x 175W (8Ω)

• Constant Voltage: 70V / 100V

• THD: <0.5%

• Frequency Response: 50 Hz – 20 kHz (±1 dB)

• Input Connectors: Balanced XLR, Terminal Block

• Cooling: Convection (Fanless)

• Rack Units: 1U

• Dimensions (HxWxD): 44 x 483 x 330 mm

Ideal Applications

The Bosch PRS-1B500 Basic Power Amplifier is perfectly suited for a wide range of commercial and security audio applications, including:

• Background Music Systems (Retail, Restaurants, Hotels)

• Public Address & Paging (Schools, Offices, Warehouses)

• Security & Emergency Sound Systems (Evacuation, Mass Notification)

• Conference Systems and Corporate AV

• Tourist Attractions and Houses of Worship