LBB4422/10 Bosch Digital Power Amplifier

Bosch LBB4422/10 Product Brief
Basic Identification Information
Brand: Bosch Security; Origin: Netherlands
Model No.: LBB4422/10
Full Product Name: Dual 250W Digital Power Amplifier for PA System
Customs HS Code: 85184000
Mounting: Standard 19-inch rack embedded installation

Physical Parameters
Standard 2U rack size; Net weight: approx 4.8kg
Front panel equipped with LCD display, rotary control and status LED indicators; metal chassis with heat dissipation vents
Electrical Parameters
Rated power supply 48VDC (-10% ~ +20%); max power consumption 378W, standby power 21W
2 balanced microphone/line input ports, dual 250W audio output channels supporting 100V/70V speaker lines
Dual system network ports for interconnection with PA system controllers
Environmental Conditions
Continuous operating temperature: -5°C ~ +55°C; storage temperature: -20°C ~ +70°C
Working humidity: 15%–90% non-condensing; compliant with IEC60849 voice alarm standard, CE certified
Core Product Characteristics
Dual independent 250W power output with built-in loudspeaker line supervision for cable fault alarm. Wide frequency response and high signal-to-noise ratio for clear broadcast audio. Networked architecture supports centralized remote monitoring and parameter configuration. Low standby power design reduces long-term energy consumption, integrated with complete Bosch PRAESIDEO public address system.