Bosch LB1-UM20E-D User Manual
Communications Systems | LB1‑UMx0E Premium‑sound Cabinet Loudspeaker Range
LB1‑UMx0E Premium‑sound Cabinet
Loudspeaker Range
www.boschsecurity.com
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High-fidelity music and speech reproduction
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Supplied with adjustable wall‑mounting bracket
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Self‑restoring overload protection
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Provision for internal mounting of the optional line /
loudspeaker supervision board
loudspeaker supervision board
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EN 54‑24 certified
The Premium‑sound range of cabinets is intended for
clear reproduction of speech, foreground and
background music to be used in general indoor and
outdoor applications. The range comprises two
models, offering a choice of 20 W or 50 W power
handling capacity. The enclosures are made from
aluminum with ABS top and bottom covers and are
available in charcoal (D) and white (L).
Typical applications for these products are: theme
bars, music restaurants, theme parks, retail outlets,
audio visual, boardrooms and offices, exhibition areas
and presentation environments, fitness centre.
Its excellent sound reproduction capability is
attributed the superb to the use of high‑quality driver
components and crossover network design.
A self‑restoring passive element protects the high
frequency driver against incidental overload.
A three‑way ceramic terminal block with screw
connections suitable for loop-through wiring is located
in the compartment in the base of the unit.
An easy to install, sturdy wall mounting bracket is
standard supplied. The same bracket can be used in
combination with the universal floor stand
LBC 1259/00 for temporary installations.
clear reproduction of speech, foreground and
background music to be used in general indoor and
outdoor applications. The range comprises two
models, offering a choice of 20 W or 50 W power
handling capacity. The enclosures are made from
aluminum with ABS top and bottom covers and are
available in charcoal (D) and white (L).
Typical applications for these products are: theme
bars, music restaurants, theme parks, retail outlets,
audio visual, boardrooms and offices, exhibition areas
and presentation environments, fitness centre.
Its excellent sound reproduction capability is
attributed the superb to the use of high‑quality driver
components and crossover network design.
A self‑restoring passive element protects the high
frequency driver against incidental overload.
A three‑way ceramic terminal block with screw
connections suitable for loop-through wiring is located
in the compartment in the base of the unit.
An easy to install, sturdy wall mounting bracket is
standard supplied. The same bracket can be used in
combination with the universal floor stand
LBC 1259/00 for temporary installations.
All models are supplied with a built‑in 70/100 V
transformer with taps on the primary winding for
full‑power, half‑power, quarter‑power and one‑eighth
power radiation. These taps are connected to a rotary
vari‑tap switch located in the compartment in the base
of the enclosure, to allow simple output power setting.
A low ohmic connection is also provided on the
vari‑tap switch.
transformer with taps on the primary winding for
full‑power, half‑power, quarter‑power and one‑eighth
power radiation. These taps are connected to a rotary
vari‑tap switch located in the compartment in the base
of the enclosure, to allow simple output power setting.
A low ohmic connection is also provided on the
vari‑tap switch.
Functions
Voice alarm
Voice alarm loudspeakers are specifically designed for
use in buildings, where the performance of Public
Address systems is subject to official regulations. The
LB1‑UMx0E‑x are designed for voice alarm systems,
and are EN 54‑24 certified and compliant with
BS 5839‑8 and EN 60849.
use in buildings, where the performance of Public
Address systems is subject to official regulations. The
LB1‑UMx0E‑x are designed for voice alarm systems,
and are EN 54‑24 certified and compliant with
BS 5839‑8 and EN 60849.
Protection
The loudspeakers 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, system
integrity is maintained; ensuring loudspeakers in other
areas can still be used to inform people of the
situation.
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.