BOSCH LBB1938/20 Power Amplifier, 1x480W
Business Type: LBB1938/20
Product number: F.01U.025.755

LBB1938/20 Power Amplifier, 1x480W
480W power amplifier uses 3U 19 inch high chassis
EN 54*16 Certification
Output of 70 V/100 V and 8 ohms
Two-way input with priority switching function
100 V input for subordinate operation on 100 V loudspeaker line
Main power supply
Voltage 220/230 VAC, +10%, 50/60 Hz
Inrush current 19 A
Maximum power consumption 2200 VA
Battery power supply
Voltage 24 VDC+15%/15%
Maximum current 30 A
performance
Output power (RMS/max) 480 W/720 W
Power Reduction of Standby Power Supply - 1 dB
Frequency response 50 Hz to 20 kHz (+1/3 dB, 10 dB reference rated output)
Distortion < 1% (rated output power), 1 kHz
Signal-to-noise ratio (flat at maximum volume)>90 dB
Line input 2x
Interface 3-pin XLR, equalization
Sensitivity 1 V
Impedance 20 kOhms
CMRR > 25 dB (50 Hz to 20 kHz)
Gain 40 dB
100 V Input
Interface screw, unbalanced
Sensitivity 100 V
Impedance 330 kO
Line Loop Output 2x
Interface 3-pin XLR
Rated level 1V
Impedance is directly connected to line input
Speaker Output 3x
Interface screw, floating
Direct output 100 V, 70 V, 8 ohms
Priority only (from input 1) 100 V or 70 V, internal optional
Music (non-priority) 100 V or 70 V only, internal optional
AC power operation
Maximum power 990 W
- 3 dB 715 W
- 6dB 510W
Pilot audio*110 W
Free 25 W
24 VDC Work
Maximum power 32 A (770 W)
- 3dB 26A (625W)
- 6 dB 18 A (430 W)
Pilot tone * 3.8 A (91 W)
Free 0.7 A (17 W)
Dimensions (high x width x depth) 145 x 430 x 370 mm (19 inches wide, 3U high, including legs)
It weighs about 25 kilograms.
Installation of stand-alone, 19-inch rack
Color carbon black
Working temperature - 10 C to + 55 C (+14 F to + 131 F)
Storage and transportation temperatures - 40C to + 70C (- 40F to + 158F)
Relative humidity < 95%
Fan Noise Level < 48 dB Sound Pressure Level, 1 m (Maximum Output)