Bosch PLENA LBB1938/30 - Line Input Specifications; Loudspeaker Output Specifications

PLENA power amplifiers Technical data | en 21
Bosch Security Systems B.V. Installation and operation manual 2018.11 | V1.2 | LBB193x/x0
10.2.3 Line inputs
3 pin XLR balanced
Sensitivity 1 V
Impedance 20 kohm
CMRR > 40 dB (50 Hz - 20 kHz)
100V input, screw unbalanced
Sensitivity 100 V
Impedance 330 kohm
10.2.4 Loudspeaker outputs
Line loopthrough output (3 pin XLR balanced)
Nominal level 1 V
Impedance Direct connection to line input
Maximum rated output power - 70/100V output
LBB1930/20 120 W
LBB1935/20 240 W
LBB1938/x0 480 W
8 Ohm outputs
LBB1930/20 31 V / 120 W
LBB1935/20 44 V / 240 W
LBB1938/x0 62 V / 480 W
Power reduction@24 V battery operations
Reference rated power -1 dB (LBB1935/20)
-2 dB (LBB1930/20, LBB1938/x0)