Bosch LA1-UM40E LA1-UM40E-1 User Manual
Product codes
LA1-UM40E-1
Communications Systems | LA1‑UMx0E‑1 Metal Column Loudspeakers
LA1‑UMx0E‑1 Metal Column Loudspeakers
www.boschsecurity.com
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Good speech intelligibility and background music
reproduction
reproduction
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For applications where directivity is important
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Slim-line weatherproof design
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Swivel wall mounting bracket supplied as standard
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Robust aluminum construction
The LA1-UM20E-1 and LA1-UM40E-1 metal column
loudspeakers deliver professional performance from a
robust, yet aesthetically designed aluminum enclosure
in a white finish.
It is an ideal loudspeaker column where sound
beaming is required, for both indoor and outdoor use
in passenger terminals, places of worship, conference
venues, theme parks, swimming pools, factories,
exhibition areas.
A swivel wall mounting bracket is supplied as
standard, allowing accurate positioning.
loudspeakers deliver professional performance from a
robust, yet aesthetically designed aluminum enclosure
in a white finish.
It is an ideal loudspeaker column where sound
beaming is required, for both indoor and outdoor use
in passenger terminals, places of worship, conference
venues, theme parks, swimming pools, factories,
exhibition areas.
A swivel wall mounting bracket is supplied as
standard, allowing accurate positioning.
Functions
Voice alarm
Voice alarm loudspeakers are specifically designed for
use in applications, where the performance of
PA systems is subject to official regulations. The LA1-
UM20E-1 and LA1-UM40E-1 are designed for voice
alarm systems.
use in applications, where the performance of
PA systems is subject to official regulations. The LA1-
UM20E-1 and LA1-UM40E-1 are designed for voice
alarm systems.
Protection
Both loudspeaker columns have built‑in protection to
ensure that in the event of a fire damage does not
cause failure of the connected circuit. In this way,
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.
in other areas can still be used to inform people of the
situation.
Connections and safety
The loudspeaker columns have a ceramic terminal
block, thermal fuse, and heat-resistant, high-
temperature wiring. The column has a provision for
internally mounting the optional line/loudspeaker
supervision board.
block, thermal fuse, and heat-resistant, high-
temperature wiring. The column has a provision for
internally mounting the optional line/loudspeaker
supervision board.
Loudspeaker output power setting
Four primary taps are provided on the built‑in
matching transformer. Loudspeaker output power
setting is done on the build-in transformer and
connected to a rotary vary‑tap switch located in the
back of the enclosure to allow simple output power
setting. An 8 ohms setting is also provided on the
rotary vary‑tap switch.
matching transformer. Loudspeaker output power
setting is done on the build-in transformer and
connected to a rotary vary‑tap switch located in the
back of the enclosure to allow simple output power
setting. An 8 ohms setting is also provided on the
rotary vary‑tap switch.
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
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