Bosch F.01U.269.034 Datasheet
Communications Systems | LBC 3430/03 Bidirectional Sound Projector
LBC 3430/03 Bidirectional Sound Projector
www.boschsecurity.com
u Excellent speech and music reproduction
u Ceiling and/or wall mounting
u Robust aluminum extrusion enclosure
The LBC 3430/03 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 white. It has
provisions for cable loop-through connection and
inside mounting of a line- or loudspeaker- supervision
board. 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 3430/03 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
u Water and dust protected to IP 55
u EN 54‑24 certified
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 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.
146 (5.75)
186 (7.32)
125 (4.92)
205 (8.07)
175 (6.89)
157 (6.18)
5.5 (0.22)
4
4
Pos.
5
4
3
2
1
1.5W
6W
3W
NC
12W
100V70V
6W
Power
12W
1.5W
3W
0.75W
2
3
4
5
1
60
70
80
90
100
110
10 100 1000 10000 100000
Frequency (Hz)
dB SPL
BOSCH
-30
-25
-20
-15
-10
-5
0
5
0
10
20
30
40
50
60
70
80
90
100
110
120
130
140
150
160
170
180
190
200
210
220
230
240
250
260
270
280
290
300
310
320
330
340
350
125
250
500
1000
| LBC 3430/03 Bidirectional Sound Projector
2
Safety Acc. to EN 60065
Emergency Acc. to EN 54‑24 / BS 5839‑8 /
EN 60849
Water and dust protection Acc. to IEC 60529, IP 55
Region Certification
Europe CE
CPD
Installation/configuration notes
Mounting
The sound projector can be mounted to the ceiling or
wall by means of two screws. The connection cable is
fed out through an ABS cable gland (PG13.5) in the
base of the mounting bracket. The wires can be
terminated on the inside ceramic screw terminal
block.
For loop‑through connection, the cover plate is fitted
with a second hole (covered as standard supplied).
Power Setting
The loudspeaker includes a transformer for both 70 V
and 100 V with taps on the primary winding for
different power settings.
The required power radiation (in 3 dB steps) can
easily be selected via a rotary vari‑tap switch, located
close to the screw terminal block.
The sound projector has an provision for inside
mounting of the optional line-/loudspeakersupervision board.
Circuit diagram
Frequency response
Dimensions in mm/(in)
Polar diagram
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