BOSCH LBB1925/10 system preamplifier, 6-zone
Business Type: LBB1925/10
Product number: F.01U.505.591

LBB1925/10 system preamplifier, 6-zone
6-zone system preamplifier, providing single or dual-channel operation
Two Input Channels for Call Stations
Microphone/line universal input, with voice optimized voice control device
Three-way input for background music selection, equipped with music optimization tone control device
Front panel BGM area selection and call station area selection for call
PC and trigger input for automatic calls, alarm sounds and music to selected areas
LBB1925/10 system preamplifier China CN: 4,054 F.01U.505.591
Main power supply
Voltage 230/115 VAC, +15%, 50/60 Hz
Inrush current 230/115 VAC, 1.5/3 A
Maximum power consumption 25 VA
Battery power supply
Voltage 24 VDC, +10%/15%
Maximum current 1A
performance
Frequency response 50 Hz to 20 kHz (+1/-3 dB)
Distortion < 0.5%
Bass control +10 dB@ 100 Hz
Tenor control (+10 dB@ 10 kHz)
Channel separation > 70 dB @ 1 kHz
Priority mute > 40 dB
Dynamic range 100 dB
Microphone/line input 1x
Connector 5-pin DIN, 3-pin XLR, balanced, with phantom power supply
Sensitivity 1 mV (microphone); 200 mV (line)
Impedance > 1 kohm (microphone); > 5 kohm (line)
Signal-to-noise ratio (flat at maximum volume)>63 dB (microphone);>70 dB (line)
Signal to Noise Ratio (Minimum Volume/Flat at Silence)>75 dB
CMRR > 40 dB (50 Hz - 20 kHz)
Remains > 25 dB
Speech filter - 3 dB (315 Hz), high pass, 6 dB/oct
Phantom power supply 16 V, through 1.2 kohm, (microphone mode only)
Line input 3x
Connector Lotus Blossom, Stereo to Mono, Unbalanced
Sensitivity 200 mV
Impedance 22 kohm
Signal-to-noise ratio (flat at maximum volume)>70 dB
Signal to Noise Ratio (Minimum Volume/Flat at Silence)>75 dB
Remains > 25 dB
Main output 1x
Connector 3-pin XLR, equalization
Rated level 1V
Impedance < 100 ohm
Tape output 1x
Connector Lotus Blossom, 2x Mono Channel
Rated level 350 mV
Impedance < 1 kohm
Headphone Output 1x
Connector 6.3mm stereo jack, mono channel signal
Rated level 3V
Impedance < 100 ohm
Area Relay 5A
Contact Voltage 250V
Contact current 8A
Interconnection Input/Emergency 1x
Connector 3-pin XLR, equalization
Sensitivity 200 mV (interconnection), 100 mV to 1 V, adjustable (emergency)
Impedance > 10 kohm
VOX threshold 45 mV (emergency)
Interconnection output 1x
Connector 3-pin XLR, equalization
Rated level 200 mV
Impedance < 100 ohm
Relay contacts 30V, 1A
DC power supply output voltage 24 V, 250 mA (maximum)
Dimensions (high x width x depth) 100 x 430 x 270 mm (19 inches wide, 2U high)
It weighs about 5 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%