Bosch Security Systems PRS-2B250 2-Channel 250W Basic Power Amplifier #1 15:46

• BOSCH
• PRS-2B250
• S/N: 0002305
• HW: 01/02
• WK: 0712
• 880 VA/50-60 HZ
• 100-120/220-240 VAC
• NL-4827HG-10

The Bosch PRS-2B250 Basic Power Amplifier is the workhorse of commercial audio systems. Engineered for unwavering reliability in 24/7 operation, this 2-channel amplifier delivers clean, clear power for public address, paging, and background music. Its robust design and essential feature set make it the perfect, cost-effective solution for demanding installations in schools, retail stores, corporate offices, and houses of worship where clear communication is non-negotiable.

Key Features & Benefits

• Robust 2x250W Output: Delivers ample power to drive multiple speaker zones across a facility. Each channel provides 250W, ensuring your message and music are heard loud and clear.

• 70V / 100V & 4/8 Ohm Operation: Offers maximum installation flexibility. Easily connect to distributed speaker lines in commercial settings (70V/100V) or direct to low-impedance speakers (4/8 Ohm) for smaller zones.

• Priority Input Muting: A critical feature for life-safety and emergency paging. A prioritized audio input (e.g., from an emergency microphone) can automatically mute background music to ensure urgent announcements take precedence.

• Durable 2U Rack-Mount Design: Built to last in a standard 19-inch rack enclosure. The sturdy metal chassis ensures reliable performance in demanding environments and simplifies integration into equipment racks.

• Comprehensive Protection Circuits: Safeguards your investment with advanced protection against short circuits, overloads, DC offset, and overheating, ensuring long-term amplifier and speaker system longevity.

• Forced-Air Cooling with Thermal Control: A temperature-controlled fan provides efficient and quiet cooling, maintaining optimal performance even during extended periods of use.

• LED Status Indicators: At-a-glance monitoring of power, signal presence, and fault conditions for easy system diagnostics and maintenance.

Technical Specifications

• Power Output: 2 x 250W

• Load Impedance: 4/8 Ω, 70V, 100V

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

• Total Harmonic Distortion (THD): < 0.5%

• Signal-to-Noise Ratio: > 95 dB

• Input Connectors: Balanced 3-pin terminal block

• Output Connectors: 4-pin terminal block

• Cooling: Temperature-controlled forced air

• Rack Units: 2U

• Dimensions (HxWxD): 3.5″ x 19″ x 12.2″ (88 x 483 x 311 mm)

Ideal Applications

The Bosch PRS-2B250 is perfectly suited for a wide range of commercial and institutional applications, including:

• Corporate Offices & Boardrooms

• Schools & Universities (Classrooms, Hallways)

• Retail Stores & Shopping Malls

• Houses of Worship

• Hospitals & Healthcare Facilities

• Factories & Warehouses

• Background Music (BGM) Systems

• Public Address (PA) and Paging Systems