Bosch LBC 3430 2 User Manual
Communications Systems | LBC 3430/02 Bidirectional Sound Projector
LBC 3430/02 Bidirectional Sound Projector
www.boschsecurity.com
u Excellent speech and music reproduction
u Ceiling and/or wall mounting
u Robust aluminum extrusion enclosure
u Water and dust protected to IP 55
u BS 5839‑8 and EN 60849 compliant
The LBC 3430/02 is a 12 W bidirectional sound
projector intended for speech and music reproduction
in indoor and outdoor applications. The two
loudspeakers facing in opposite directions are ideally
suited to applications such as subway tunnels, long
corridors and shopping arcades. The sturdy, aluminum
enclosure is finished in the color off-white. The sound
projector is suitable for use in voice alarm systems.
Functions
Voice alarm loudspeakers are specifically designed for
use in buildings where performance of systems for
verbal communication announcements is governed by
regulations. The LBC 3430/02 is designed for use in
voice alarm systems and is compliant with British
Standard BS 5839‑8 and EN 60849.
The loudspeaker has built-in protection to secure that,
in the event of a fire; damage to the loudspeaker does
not result in failure of the circuit to which it is
connected. In this way, system integrity is maintained;
ensuring loudspeakers in other areas can still be used
to inform people of the situation. The loudspeaker has
a ceramic terminal block, thermal fuse and heat
resistant, high-temperature wiring.
The sound projector is constructed from extruded
aluminum and finished in off- white. The front-grills
and bracket are made from aluminum to increase
corrosion resistance.
Certifications and approvals
Quality assurance
All Bosch loudspeakers are designed to withstand
operating at their rated power for 100 hours in
accordance with IEC 268-5 Power Handling Capacity
(PHC) standards. Bosch has also developed the
Simulated Acoustical Feedback Exposure (SAFE) test
to demonstrate that they can withstand two times
their rated power for short durations. This ensures
improved reliability under extreme conditions, leading
to higher customer satisfaction, longer operating life,
and lessons the chance of failure or performance
deterioration.
Safety acc. to EN 60065
Emergency acc. to BS 5839‑8 / EN 60849
Water and dust protection acc. to IEC 60529, IP 55
mm
175
186
100
166
146
6.89
3.94
In
5.75
7.32
6.54
5.5
157
0.22
6.18
mm
In
6W
3W
1.5W
12W
0
Frequency (Hz)
SPL(dB)
31.5
63
125
250
500
1k
2k
4k
8k 16k
10dB
90
250 Hz
500 Hz
100 0 Hz
2000 Hz
4000 Hz
8000 Hz
120˚120˚
150˚
150˚
180˚180˚
90˚90˚
60˚60˚
30˚30˚
0˚0˚
0
0
-10
-10
-20
-20
2 | LBC 3430/02 Bidirectional Sound Projector
Region Certification
Europe CE
Installation/configuration notes
Mounting
The sound projector mounts to the ceiling or to the
wall in such a way, that the connection cable is not
visual which is important in areas where vandalism is a
potential hazard.
Power setting
A one-meter long fire-resistant six‑core connection
cable is standard fitted to the loudspeaker. Each core
is a different color, and is connected to one of the
primary taps on the transformer.
Frequency response
Dimensions mm / in
Circuit diagram
Polar diagram
Octave band sensitivity *
Octave SPL
1W/1m
Total octave
SPL
1W/1m
Total octave
SPL
Pmax/1m
125 Hz 76.8 - -
250 Hz 85.0 - -
500 Hz 88.9 - -
1000 Hz 91.6 - -
2000 Hz 95.5
4000 Hz 96.4 - -
8000 Hz 92.3 - -
A-weighted - 91.3 101.3
Lin-weighted - 91.4 100.6
Octave band opening angles
Horizontal Vertical
125 Hz 119 119
250 Hz 129 129
500 Hz 131 131
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