Bosch LBB 1930 - External Settings and Connections; Line Input and Loopthrough Connections; Input and Loopthrough Diagram; Using the Volume Control

Bosch Security Systems | 2003-09 | 3922 988 92983en
Plena Booster Amplifier | Installation and Operating Manual | en | 13
4.2 Connecting the line input and loopthrough
Figure 4.3
The booster amplifier has a balanced line input for connection to a preamplifier or a mixer. Use the loopthrough
connection to connect the booster amplifier to another booster amplifier if more power is needed. Each power
amplifier must be connected to its own set of loudspeakers. Do not connect booster outputs to each other. The
LBB1930 and LBB1935 have both XLR (3 and 5) and phone jack connectors (4 and 6) for input and loopthrough.
For the LBB1938 use program line - input 2 (4) and line loopthrough 2 (6) for normal operation without priority.
Volume control
Use the volume control next to the line input to set the output level of the booster amplifier.
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External settings and connections