Bosch LBB-1965/00

Bosch LBB-1965/00 Digital Message Announcer, 12 message capacity at CD quality, 12 trigger inputs.

Original price was: $1,281.50.Current price is: $1,197.00.

In Stock
SKU: LBB-1965/00 Category: Tag:


Bosch LBB-1965/00 Plena message manager is a high performance, highly versatile stand-alone digital message player. Applications range from spot announcements in supermarkets and theme parks to warning and evacuation messages in emergency situations.


Up to 12 messages can be stored in the internal 64Mbit EEPROM without the need for data retention battery backup. Each message can have any length within the total available capacity. A PC uploads messages and configurations via RS-232 to the unit, which can then operate without a PC.

The standard WAV format is used for messages with sample rates of 8 to 24 kHz with 16-bit word length (linear PCM). This gives up to 500 sec of recording time with a CD-quality signal-to-noise ratio.

The use of linear PCM instead of a compressed audio format, such as MP3, ADPCM, and u-law/A-law, ensures high-quality playback of all types of audio signals, including sound effects and special tones such as attention chimes.

The unit has 12 contact closure trigger inputs for announcements. Each can be configured for a sequence of up to 4 messages from those available. In this way, messages can be used in combination with other messages, optimizing flexibility and storage space usage.

When used together with the 6-zone LBB 1925/10 Plena System Pre-Amplifier, zone selection can be configured for each trigger input. The message manager communicates this selection to the LBB 1925/10 Pre-Amplifier via an RS-232 connection. Continuous activation of a trigger input causes the corresponding message sequence to repeat.

Trigger Inputs

The trigger inputs have a serial priority, i.e., input 1 has priority over input 2, input 2 over input 3, etc. The high priority trigger inputs 1 to 6 are only accessible as contacts on the rear panel to prevent accidental use. The lower priority trigger inputs 7 to 12 are sold separately as trigger switches on the front panel.

Integrity and Dependability

It can also play emergency/evacuation messages as it fulfills the IEC 60849 standard. The micro-controller continually checks the data integrity of the system, and a watchdog circuit, in turn, checks the micro-controller. The unit monitors the D/A converter with a pilot tone, and the high priority trigger inputs (1 to 6) for cable short circuits and breaks. A 24V battery backup connection with automatic fail-safe provides continued operation if the mains power should fail.

A 20 kHz pilot tone can be mixed with the output signal to supervise the link to the next amplifier. This also works for loudspeaker supervision in combination with 20 kHz detectors. Any failure causes a red LED fault indication and activates a fault output contact.

Loop-Through Facility

It provides a loop-through facility with balanced XLR and unbalanced cinch inputs and outputs. This allows the unit to be inserted into an existing audio link. As long as no announcements are playing, the signal input is routed to the output. If an announcement begins, the input signal is interrupted and the announcement is routed to the output.


Messages and configuration settings are uploaded from a PC. After uploading, the trigger inputs 7 to 12 can be configured by using the front panel switches, without the need for a new upload or even a PC. Message content can be monitored using a headphone jack (sold separately).


Highly flexible stand-alone digital message player Up to 12 messages and 12 trigger inputs
Downloads messages from a PC in WAV format
Compliant with standards for emergency sound systems
Zone control for LBB 1925/10 Plena System Pre-Amplifier


Highly flexible stand‑alone digital message player

Up to 12 messages and 12 trigger inputs

Downloads messages from a PC in WAV format

Compliant with standards for emergency sound systems

Zone control for Plena system preamplifier LBB 1925/10


Power Supply Mains:
Voltage: 230 / 115 VAC, ±10%, 50/60 Hz
Inrush Current: 1.5 A at 230 VAC / 3 A at 115 VAC
Maximum Power Consumption: 50 VA
Battery Power Supply:
Voltage: 24 VDC, ±15%
Current Maximum: 1 A
Supported Sample Rates (fs): 24 / 22.05 / 16 / 12 / 11.025 / 8 kHz
Frequency Response @ fs = 24 kHz: 100 Hz to 11 kHz (+1 / -3 dB)
@ fs = 22.05 kHz: 100 Hz to 10 kHz (+1 / -3 dB)
@ fs = 16 kHz: 100 Hz to 7.3 kHz (+1 / -3 dB)
@ fs = 12 kHz: 100 Hz to 5.5 kHz (+1 / -3 dB)
@ fs = 11.025 kHz: 100 Hz to 5 kHz (+1 / -3 dB)
@ fs = 8 kHz: 100 Hz to 3.6 kHz (+1 / -3 dB)
S/N Flat at Maximum Volume: >80 dB
DAC Supervision: 1 Hz pilot tone
3-Pin XLR
Line Input Balanced: 1x
Sensitivity 1 V
Impedance 20 kΩ
CMRR >25 dB (50 Hz to 20 kHz)
Line Output Balanced: 1x
Nominal Level 1 V, adjustable
Line Input Unbalanced: 1x
Sensitivity 1 V
Impedance 20 kΩ
Line Output Unbalanced: 1x
Nominal Level 1 V, adjustable
Trigger Input 6x
Activation Contact closure
Method Supervision: Cable loop resistance check
Output Message Active: 1x
Relays 100 V, 2 A (voltage free, SPDT)
Output Fault: 1x
Relays 100 V, 2 A (voltage free, SPDT)
9-pin D-sub
Connection (RS-232): Inter-Connection: 1x
Protocol PC: 115 kb/s, N, 8, 1, 0 (upload)
LBB 1925/10: 19.2 kb/s, N, 8, 1, 0 (zone control)
Data Format WAV-file, 16-bit PCM, mono
Memory Capacity 64 Mb EEPROM
Recording/Playback Time 500 sec @ fs = 8 kHz
167 sec @ fs = 24 kHz
Number of Messages 12 maximum
Time Data Retention: >10 years
Operating Temperature 14 to +131°F (-10 to +55°C)
Storage Temperature -40 to +158°F (-40 to +70°C)
Relative Humidity
Certifications and Approvals
Safety According to EN 60065
Immunity According to EN 55103-2
Emission According to EN 55103-1
Certification Europe CE Declaration of Conformity
Mounting Stand-alone, 19.0″ (482.6 mm) rack
Dimensions (H x W x D) 2.20 x 16.92 x 10.62″ (56.00 x 430.00 x 270.00 mm)
Wide: 19.0″ (482.6 mm)
Height: 1U with feet
Weight Approximately: 6.6 lb (3.0 kg)


Bosch LBB1965 Message_manager