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Bosch Plena Voice Alarm System
Bosch LBB 1990 Plena Voice Alarm Controller
The Bosch LBB 1990 Plena Voice Alarm Controller is a professional-grade solution designed to manage emergency paging and evacuation messaging with superior reliability. Part of the Bosch Plena Voice Alarm range, it provides secure control of alarms, background music, and announcements in commercial and public buildings, ensuring safe communication when it matters most.
₹227,421.00 Excluding Tax
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The Bosch LBB 1990 Plena Voice Alarm Controller is a high-performance voice alarm management unit engineered for dependable evacuation and emergency communication in modern public environments. Suitable for malls, schools, hotels, offices, industrial sites, and transportation hubs, it ensures that critical announcements are delivered clearly and without interruption during urgent situations.
This powerful controller integrates seamlessly with the Plena Voice Alarm System, offering full supervision of connected devices such as amplifiers, microphones, speakers, and zone controllers. It constantly monitors the system’s integrity — including amplifier load, speaker lines, and communication wiring — ensuring immediate fault reporting and compliance with international safety standards (such as EN 54-16).
With its built-in digital message player, the Bosch LBB 1990 Plena Voice Alarm Controller can automatically broadcast pre-recorded evacuation messages in a controlled and prioritized manner. A highly intuitive interface simplifies daily operation, making it easy for facility staff to manage public address and emergency announcements without technical complexity.
The controller supports multiple paging zones, enabling targeted communication based on the affected area while maintaining background music distribution elsewhere. Its superior audio processing ensures clear voice intelligibility, which is essential for proper evacuation instructions and crowd management.
The system includes backup power monitoring, fault logging, and secure fail-safe operation to ensure maximum reliability — even in the event of main power failure. Designed to be scalable, it can expand as building safety demands grow, making it a future-ready investment.
Ideal for integrated safety communication, the Bosch LBB 1990 Plena Voice Alarm Controller delivers advanced protection, operational control, and high-grade audio performance — ensuring the safety and confidence of building occupants in any emergency situation.
LBB 1990/00
| Brand |
|---|
Technical specifications
| Voltage | 230/115VAC, ±15%, 50/60 Hz |
| Current inrush | 8 A |
| Max power consumption | 600 VA |
| Voltage | 24 VDC, +15% / -15% |
| Current max | 14 A |
| Output power (rms/maximum) | 240 W / 360 W |
| Power reduction on backup power | -1 dB |
| Frequency response | 60 Hz to 18 kHz (+1/-3 dB at -10 dB ref. rated output) |
| Distortion | <1% at rated output power, 1 kHz |
| Bass control | -8/+8 dB at 100 Hz |
| Treble control | -8/+8 dB at 10 kHz |
| 1 x | |
| Connector | XLR, 6.3 mm jack |
| Sensitivity | 1 mV (mic), 1 V (line) |
| Impedance | >1 kohm (mic); >5 kohm (line) |
| S/N (flat at max volume) | >63 dB (mic); >70 dB (line) |
| S/N (flat at min volme/muted) | >75 dB |
| CMRR | >40 dB (50 Hz – 20 kHz) |
| Headroom | >25 dB |
| Speech filter | -3 dB at 315 Hz, high-pass,
6 dB/oct |
| Phantom power supply | 12 V (mic mode only) |
| VOX trigger level | -20 dB (100 µV mic / 100 mV line) or via input contact |
| Limiter | Automatic |
| (BGM and PC call station) | |
| Connector | Cinch, stereo converted to mono, unbalanced |
| Sensitivity | 200 mV |
| Impedance | 22 kohm |
| S/N (flat at max volume) | >70 dB |
| S/N (flat at min volume/ muted) | >75 dB |
| Headroom | >25 dB |
| 12 x (6 EMG, 6 business) | |
| Connectors | MC1,5 / 14-ST-3,5 |
| Activation | Programmable |
| Supervision | On EMG inputs, programmable |
| Supervision method | Series / parallel resistor |
| Connector | MSTB 2,5 /16-ST |
| Power handling capacity | 1000 W |
| 1 x | |
| Connector | Cinch, 2 x mono |
| Nominal level | 350 mV |
| Impedance | <1 kohm |
|
Connectors |
MSTB 2,5 /16-ST, floating |
| 100 V output | 700 W rated per zone |
| Volume override types | 3-wire, 4-wire (24 V), 4-wire failsafe |
| BGM zone output Attenuation | 70 / 50 /35 /25 / 18 / 13 V for
0 / -3 / -6 / -9 / -12 / -15 dB 120 / 60 / 30 / 15 / 8 /4 W |
| Connector Type | MC 1,5/14-ST-3,5 |
| Rating | 250 V, 7A, voltage free |
| Emergency active relay | NO / COM / NC |
| Call active relay | NO / COM / NC |
| Fault relay | NO / COM / NC normally energized (failsafe) |
| General purpose relays | NO / COM |
| Max power | 550 W |
| -3dB | 440 W |
| -6dB | 340 W |
| Pilot tone* | 136 W |
| Idle | 60 W |
| Max power | 14.0 A (336 W) |
| -3 dB | 12.5 A (300 W) |
| -6 dB | 9.5 A (228 W) |
| Pilot tone* | 2.5 A (60 W) |
| Idle | 0.9 A (22 W) |
| Data format | WAV-file, 16-bit PCM, mono |
| Supported sample rates (fs) | 24 / 22.05 / 16 / 12 / 11.025 /
8 kHz |
| Frequency response | |
| at fs=24kHz | 100 Hz to 11 kHz (+1/-3 dB) |
| at fs=22.05kHz | 100 Hz to 10 kHz (+1/-3 dB ) |
| at fs=16kHz | 100 Hz to 7.3 kHz (+1/-3 dB ) |
| at fs=12kHz | 100 Hz to 5.5 kHz (+1/-3 dB) |
| at fs=11.025kHz | 100 Hz to 5 kHz (+1/-3 dB) |
| at fs=8kHz | 100 Hz to 3.6 kHz (+1/-3 dB) |
| Distortion | <0.1% at 1 kHz |
| S/N (flat at max volume) | >80 dB |
| Memory capacity | 16 MB Flash ROM |
| Recording / playback time | 1000 seconds at fs = 8 kHz 333 seconds at fs = 24 kHz |
| Number of messages | 255 max |
| Supervision Flash ROM | Continuous checksum control |
| Supervision DAC | 1 Hz pilot tone |
| Data retention time | >10 years |
| Dimensions (H x W x D) | 144 x 430 x 370 mm (19″ wide, 3U high) |
| Weight | Approx. 21.17 kg |
| Mounting | 19”rack |
| Color | Charcoal |
Based on 4 reviews
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Randall Knoblauch –
Great sound and zero connectivity issues. Would definitely order again.
Randall Knoblauch –
Ashutosh –
Decent product
Ashutosh –
Kevin –
Excellent sound quality amplifier.
Sakthi AV Tronics deliver on time and explain all doubts in polite manner. Service is very good with affortable price.
Kevin –
Avenue17 –
I apologise, but, in my opinion, you are not right. I am assured. Let’s discuss it. Write to me in PM.
Avenue17 –