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Stop production: Bosch LBB 1906 / 10 hybrid amplifier lbb1906 / 10 is replaced by ple-1ma120-eu 120W
Business type: lbb1906 / 10
Product No.: f.01u.505.585





LBB 1903 / 10 hybrid amplifier
Range of single and dual zone mixer amplifiers from 30 W to 120 W
Four low-noise balanced inputs for microphone or line
Selectable priority & VOX switching on microphone input 1
Optional 2-tone chime to precede announcements
VOX activated emergency override
Outputs for normal, call-only and mix-only zones
Choice of CD, tuner or auxiliary music inputs
Ple-1ma060-eu 60W hybrid amplifier China cn: 2738 f.01u.033.714
A variety of single and dual zone mixed amplifiers with power from 30 W to 120 W
Four low signal noise, balanced microphone or line inputs
Priority and vox switching can be selected on microphone input 1
You can choose to play 2 tones before broadcasting
Vox activates emergency control button
The vari hybrid amplifier is a high-performance multi-functional device with four mono microphone inputs and one music input. It can meet a variety of public broadcasting requirements, and the cost is very low.

basic function

All input channels are equipped with phantom power to power condenser microphones and optional voice filters for improved clarity. In addition, input channels 3 and 4 can be switched according to line sensitivity. Independent music input has its own input selector and volume control.
Input channel 1 can take precedence over all other microphone and music inputs.
This priority function is activated when the contact on the 5-pin DIN interface is closed or the signal level on channel 1 exceeds a predetermined value (VOX). The user can configure the amplifier to play a 2-tone prompt before playing the priority broadcast. Telephone or emergency input with vox activation and its preset volume control will take precedence over all other inputs.

Loop input and output connections allow the connection of external sound processing devices, such as equalizers and speckle feedback suppressors, between the preamplifier and the power amplifier assembly. The LED Vu meter is used to monitor the main output. The device is also equipped with a tape output channel.
Vari hybrid amplifiers are available in a variety of models with different maximum output power.
70 V and 100 V constant voltage connection lines and 8 ohm low impedance connection lines can directly provide such power. In addition, these amplifiers have separate 70 V / 100 V "call only" output channels for broadcast areas where only priority broadcasting is required, while 70 V / 100 V "mixed only" output channels are used for areas where priority broadcasting is not required. Call only output can also be used for 3-wire remote volume control. If the required power is greater than the output power provided by the built-in power amplifier module, additional variegated power is allowed to be amplified in a loop layout

The amplifier is connected to the equalizing line output.

The function of LBB 1914 / 10 is the same as LBB 1912 / 10, but it also has two front panel switches that direct the amplifier output to two separate areas. This is useful when certain areas of the building do not need to hear certain radio or background music. However, priority calls are always sent to both areas.

Controls and lights

front panel

LED power indicator

Power on LED

Main volume control knob

Four volume control knobs for microphone input

Three knobs for background music volume, treble and bass levels

Background music source selection knob
Power switch
Two area selection buttons (lbb1914 / 10 only)
Back panel
· EMG input volume control
Two microphone / line switches
· tone on / off switch
Power supply voltage switch
Interconnect components
front panel
? headphone jack
Back panel
? priority microphone input (DIN / 6.3 mm jack)
· microphone input (XLR / 6.3 mm jack)
Two microphone / line in (XLR / 6.3 mm jack)
Three audio inputs (2 lotus plugs)
· EMG input (screw)
· line out (XLR)
? tape output (2 lotus plugs)
· plug in I / O (2 lotus plugs)
· 24 VDC input
Three (five for LBB 1914 / 10) speaker outputs (screw)
Certificate and recognition
Safety in accordance with en 60065
The immunity meets the standard of EN 55103-2
The radiation meets the en 55103-1 standard
Regonal certification
European CE
Installation / configuration
Rear view of LBB 190x / 10 and LBB 191x / 10
enclosure
Quantity component
1 LBB 190x / 10 variegated hybrid amplifier
or
LBB 191x / 10 hybrid amplifier
1 power cord
1 19 inch mounting bracket Kit
1 installation and user instructions
technical specifications
Electrical indicators
AC power supply
Voltage 230 / 115 VAC, ± 10%, 50 / 60 Hz
Inrush Current
LBB 1903/10 4.5 / 9 A (230 / 115 VAC)
LBB 1906/10 5 A / 10 A (230 / 115 VAC)
LBB 1912/10, LBB 1914/10 8 / 16 A (230 / 115 VAC)
Battery power supply
Voltage 24 VDC, + 15% / - 15%
electric current
LBB 1903/10 1.6 A
LBB 1906/10 3 A
LBB 1912/10, LBB 1914/10 6 A
performance index
Frequency response 50 Hz to 20 kHz (+ 1 / - 3 dB, - 10 dB reference rated output)
Distortion < 1% (rated output power), 1 kHz
Bass control - 8 / + 8 dB, 100 Hz
Treble control - 8 / + 8 dB, 10 kHz
Dynamic range 100 dB
Microphone input 2 channels
Connector 1 5 pin DIN, 6.3 mm headphone jack, flat
Scale type with phantom power supply
Connector 2 3-pin XLR, 6.3mm headphone jack, flat
Scale type with phantom power supply
Sensitivity 1 MV
Impedance > 1K ohm
SNR (flat at maximum volume) > 63 DB
Signal to noise ratio (minimum volume / mute

Sales telephone (same number of wechat): 13428785305 QQ: 2461903042