Bosch F.01U.074.281 Datasheet
Communications Systems | LH1‑10M10E Horn Loudspeaker
LH1‑10M10E Horn Loudspeaker
High efficiency driver
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Excellent speech reproduction
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Provision for inside mounting of the optional
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line / loudspeaker supervision board
Water-and dust protected to IP 65
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Compliant with EVAC standards
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The LH1‑10M10E high-efficiency horn loudspeaker, provide
excellent speech reproduction and sound distribution for a
wide scope of indoor and outdoor applications. It is ideal
for sports grounds, parks, exhibitions, factories and
swimming pools.
The LH1‑10M10E is a rectangular shaped 10 W horn
loudspeaker, made from aluminum. The edge of the horn is
covered with a PVC profile for protection against impact
damage. The rear cover of the horn is made from selfextinguishing ABS (acc. to class UL 94 V0).
The housing color is light grey (RAL 7035), and is water and
dust protected.
Functions
Voice Alarm
Voice alarm loudspeakers are specifically designed for use
in buildings, where the performance of PA systems is
subject to official regulations. The LH1‑10M10E is designed
for voice alarm systems, and is compliant with British
Standards BS 5839-8 and EN 60849.
Protection
The horn loudspeaker has built-in protection to ensure that
in the event of a fire damage does not cause failure of the
connected circuit. In this way, system integrity is
maintained, ensuring loudspeakers in other areas can still
be used to inform people of the situation.
Connections and Safety
The horn loudspeaker has a ceramic terminal block, thermal
fuse, and heat-resistant, high-temperature wiring. Four
primary taps are provided on the built-in matching
transformer to allow selection of the output power.
The horn loudspeaker has a provision for internally
mounting the optional line/loudspeaker supervision board.
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 the
speakers can withstand two times their rated power for
short durations. This ensures extra reliability under extreme
conditions, leading to greater customer satisfaction, longer
operating life, and much less chance of failure or
performance deterioration.
www.boschsecurity.com
2 | LH1‑10M10E Horn Loudspeaker
SPL (dB)SPL (dB)
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30
-25
-20-
1
5
-
10
-5
0
5
0
10
20
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500 1000
Region Certification
Europe CE
Safety acc. to EN 60065
EVAC acc. to BS 5839-8 / EN60849
Water and dust protected acc. to IEC 60529, IP 65
Installation/Configuration Notes
The connection cable could be fed through a cable gland
(PG 13.5) in the rear cover. For loop- through connection,
the rear cover is fitted with a second hole (covered as
standard supplied).
Mounting
The horn loudspeaker is supplied, complete with sturdy
adjustable steel U‑shape bracket for mounting onto walls or
ceilings, allowing the sound beam to be accurately directed.
Simple Power Setting
The horn has a three-way ceramic terminal block with screw
connection (including earth). Four primary taps are
provided on the matching transformer to allow selection of
nominal full-power, half-power or quarter-power and
eighth-power radiation (in 3 dB steps).
Frequency response
Dimensions in mm (in)
Circuit diagram
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