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BOSCH Plana 480 watt power amplifier

480 W power amplifier in a 3U high 19”housing EN 54‑16 certified and EN 60849 compliant 70 V / 100 V and 8 ohm outputs Dual inputs with priority switching 100 v input for slave operation on 100 v speaker line
Code: LBB 1938 20
Brand: Bosch
Product Downloads:
» Data Sheet
» User Manual

The amplifier is protected against overload and short circuits. A temperature-controlled fan ensures high reliability at high output levels and low acoustic noise at lower output levels. An overheat protection circuit switches off the power stage and activates an LED on the front panel, if the internal temperature reaches a critical limit due to poor ventilation or overload.

The unit operates both on mains power and on a 24 V battery power supply for emergency back up, with automatic switchover. For emergency and evacuation use, the following functions are monitored: mains presence, battery present, pilot tone presence, amplifier operation. Front panel LEDs indicate the status of supervised functions. The LEDs of pilot tone supervision and