Bosch LBB1938/30
The Bosch Plena LBB1938/30 is a powerful 480 W power amplifier in a 3U high 19”case for rack mounting or tabletop use.
The LBB 1938/30 is an ideal PAVA amp for emergency and evacuation use, with the following monitored functions: mains presence, battery present, pilot tone presence, amplifier operation.
Operates both on mains power and on a 24V battery power supply for emergency back up, with automatic switchover.
There are two separate priority controlled 100 V outputs for zones that only need announcements made via the priority input, and for zones that will not receive announcements made via the priority input.
LEDs on the front panel of the LBB1938/30 show the status of the amplifier: power, audio output level, and supervised functions.
This amp has two balanced inputs with priority control, each with a loop-through facility. This makes it easy to connect remote systems that require priority control. An additional 100 V line input is provided to connect the amplifier to a 100 V loudspeaker line to provide more power to remote locations.
This high performance, versatile power amplifier fulfills a wide range of public address requirements at a surprisingly low cost.
Rack mounting brackets supplied.
- 480 watts
- Protected against overload and short circuits
- Temperature-controlled fan for high reliability at high output levels & low acoustic noise at lower output levels
- Overheat protection circuit with LED warning on the front panel
- Operates on mains power or 24 V battery for emergency backup, with automatic switchover
- Monitored mains presence, battery presence, pilot-tone presence, amplifier operation for Emergency / EVAC use
- Front panel status LEDs for supervised functions
- Two balanced inputs with priority control, each with loop‑through
- Additional 100 V line input
- Rear mounted gain / level controls
- 70V / 100V/ 8 ohm outputs
- Two separate priority controlled 100 V outputs for zones that only need announcements made via the priority input, and for zones that will not get any announcements made via the priority input.
- Warranty: 3 Years
