Bosch LBC3483-00-US Specsheet
Communications Systems | Horn Loudspeaker 35W
LBC3483/00 Horn Loudspeaker 35W
www.boschsecurity.com
u High efficiency driver
u Excellent speech reproduction
u Provision for inside mounting of the optional line/
loudspeaker supervision board
Bosch high-efficiency horn loudspeakers provide
excellent speech reproduction and sound distribution
for a wide scope of outdoor applications. They are
ideal for sports grounds, parks, exhibitions, factories
and swimming pools.
The LBC 3483/00 is a circular, 35 W horn loudspeaker,
measuring 490 mm (19.6 in) in diameter. It is made
from aluminum. The edges of the horn are covered
with a PVC profile for protection against impact
damage. It is light gray (RAL 7035), and is water and
dust protected.
Voice alarm loudspeaker
The LBC 3483/00 is designed for use in voice alarm
systems and is compliant with emergency standards.
The horn loudspeaker has built-in protection to ensure
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 Horn
loudspeaker has a ceramic terminal block, thermal
fuse and heat resistant, high-temperature wiring.
They have provision for inside mounting the optional
line/loudspeaker supervision boards.
u Water-and dust protected to IP 65
u EN 54‑24 certified
Functions
The rear cover on the horn is made from selfextinguishing ABS (acc. to class UL 94 V0). The
connection cable is fed out through a cable gland
(PG 13.5) in rear cover. For loop through connection,
the rear cover is fitted with a second hole (covered as
standard supplied).
These integrated horns are also available as separate
horn and driver, allowing installing any combination of
horn and driver. See order information for the type
numbers.
Certifications and approvals
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
extra reliability under extreme conditions, leading to
higher customer satisfaction, longer operation life, and
much less chance of failure or performance
deterioration.
mm
in
37
1.45
204.0
8.0
102.0
4.0
51.0
2.0
37.0
1.45
18.5
0.73
10.8 x 3.0
0.43 x 0.12
51.0
2.0
3.0
0.12
mm
in
0
1
1/2
16 Ω
1/4
SPL(dB)
31.5
63
125
250
500
1000
Frequency (Hz)
2k
4k
8k 16k
10dB
90
250 Hz
500 Hz
1000 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 | Horn Loudspeaker 35W
Safety acc. to EN 60065
Water and dust protection acc. to IEC 60529, IP 65
Emergency acc. to EN 54‑24 / BS 5839‑8 /
EN 60849
Wind‑force acc. to NEN 6702: 2007 + A1: 2008,
Bft11
Region Certification
Europe CE
CE DOC (IP)
CPD
Installation/configuration notes
Simple Power Setting
The horn has a three-way terminal block with screw
connection (including earth). Three primary taps are
provided on the matching transformer to allow
selection of nominal full-power, half-power or quarterpower radiation (in 3 dB steps).
Mounting
The horn loudspeakers are supplied complete with
sturdy adjustable steel mounting brackets, allowing
the sound beam to be accurately directed.
Circuit diagram
Frequency response
Dimensions in mm (in)
Bracket dimensions
Polar diagram (measured in pink noise)
Octave band sensitivity *
Octave SPL
1W/1m
Total octave
SPL
1W/1m
125 Hz 74.0 - -
250 Hz 91.7 - -
500 Hz 102.5 - -
1000 Hz 111.3 - -
2000 Hz 106.5
Total octave
SPL
Pmax/1m
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