Musicworld.bg - BOSCH/PA LBB1930/20

Plena Power Amplifier 120W 100V

The LBB 1930/20 is a powerful 120 W power amplifier in a 2U high 19” case for rack mounting or tabletop use. LEDs on the front panel show the status of the amplifier: power, audio output level, and supervised functions.

Features:
120 W power amplifier in a compact housing
70 V / 100 V and 8 ohm outputs
Dual inputs with priority switching
100 V input for slave operation on 100 V speaker line

Technical Specifications:

Mains power supply
Voltage 230 VAC, ±10%, 50/60 Hz
Inrush current 8 A
Max power consumption 400 VA

Battery power supply
Voltage 24 VDC +15% / -15%
Current max 6 A

Output power (RMS/Maximum) 120 / 180 W
Power reduction on backup power: -1 dB
Frequency response 50 Hz to 20 kHz (+1 / -3 dB at -10 dB ref. rated output)
Distortion <1% at rated output power, 1 kHz
S/N (flat at max volume) >90 dB

Line inputs 2 x
Connector 3-pin XLR, balanced
Sensitivity 1 V
Impedance 20 kOhm
CMRR >25 dB (50 Hz to 20 kHz)
Gain 40 dB

100 V input
Connector Screw, unbalanced
Sensitivity 100 V
Impedance 330 kohm

Line loop-through output 2 x
Connector 3-pin XLR
Nominal level 1 V
Impedance Direct connection to line input

Loudspeaker outputs 3 x
Connector Screw, floating
Direct output 100 V, 70 V, 8 ohm
Priority only (from input 1) 100 V or 70 V internally selectable
Music (non-priority) only 100 V or 70 V internally selectable

Power consumption

Mains operation
Max power 274 W
-3dB 193 W
-6dB 143 W
Pilot tone* 41 W
Idle 18 W

24 VDC operation
Max power 7.0 A (168 W)
-3 dB 6.0 A (144 W)
2 | LBB 1930/20 Plena Power Amplifier
-6 dB 4.3 A (103 W)
Pilot tone* 0.9 A (22 W )
Idle 0.1 A (2.4 W)
* 20 kHz -20dB with maximum loudspeaker load

Mechanical
Dimensions (H x W x D) 100 x 430 x 270 mm
(19" wide, 2U high, with feet)
Weight Approx. 10.5 kg
Mounting Standalone, 19”rack
Color Charcoal

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