Bosch LB3-PC250 User Manual
Communications Systems | LB3-PCx50 Premium Cabinet Loudspeakers
LB3-PCx50 Premium Cabinet
Loudspeakers
www.boschsecurity.com
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High‑quality music and speech reproduction
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Weatherized, suited for sheltered outside use
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Prepared for Bosch WLS, EOL and DMY pcb’s
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Attachment points for (suspended) mounting, pole
mount
mount
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BS 5839‑8 compliant
The Bosch premium loudspeakers are full range
passive loudspeakers for a wide range of applications
where high output, wide controlled dispersion and
wide frequency are required, as well as the flexibility
of mounting inside and sheltered outside.
The Bosch line of large premium loudspeakers consists
of two sizes; 12” and 15” models. All models feature a
two‑way loudspeaker in a molded ABS VO enclosure.
The loudspeakers have a 1” compression driver
coupled to an impedance transformer with constant
directivity characteristics and a direct radiating 12” or
15” loudspeaker.
Typical uses include fixed installations in auditoriums,
conference venues, community centers, theaters,
areas of assembly, factories multipurpose halls and
sports facilities.
A self-restoring protection device protects the
high‑frequency driver against incidental overload. The
transformer accepts signals between 40 Hz and 22 kHz
at 100 V or 70 V.
passive loudspeakers for a wide range of applications
where high output, wide controlled dispersion and
wide frequency are required, as well as the flexibility
of mounting inside and sheltered outside.
The Bosch line of large premium loudspeakers consists
of two sizes; 12” and 15” models. All models feature a
two‑way loudspeaker in a molded ABS VO enclosure.
The loudspeakers have a 1” compression driver
coupled to an impedance transformer with constant
directivity characteristics and a direct radiating 12” or
15” loudspeaker.
Typical uses include fixed installations in auditoriums,
conference venues, community centers, theaters,
areas of assembly, factories multipurpose halls and
sports facilities.
A self-restoring protection device protects the
high‑frequency driver against incidental overload. The
transformer accepts signals between 40 Hz and 22 kHz
at 100 V or 70 V.
System overview
The LB3‑PC250 features a 12”woofer and 1”exit
compression driver. The LB3‑PC350 features a
15”woofer and 1” exit compression driver.
The premium loudspeaker is fitted with a specially
designed horn that provides constant coverage
independent of frequency. The handle locations and
position of rig‑points are placed to make the
loudspeaker easy to carry and align when installing.
There is an integrated pole mount on the bottom of
the cabinet and a weather-resistant steel grille. All
screws and bolts are stainless steel or treated to resist
rust. The cabinet has been designed to provide the
possibility of mounting the loudspeaker close to a side
wall or on the floor. The enclosure features high
dampening, is impact resistant and weather proof
(sheltered).
The LB3‑PC250 and LB3‑PC350 are suited for
locations where high sound pressure, wide‑band audio
is needed and where there is no mains power or
where active loudspeakers are not desired, like
outside applications or applications where the
compression driver. The LB3‑PC350 features a
15”woofer and 1” exit compression driver.
The premium loudspeaker is fitted with a specially
designed horn that provides constant coverage
independent of frequency. The handle locations and
position of rig‑points are placed to make the
loudspeaker easy to carry and align when installing.
There is an integrated pole mount on the bottom of
the cabinet and a weather-resistant steel grille. All
screws and bolts are stainless steel or treated to resist
rust. The cabinet has been designed to provide the
possibility of mounting the loudspeaker close to a side
wall or on the floor. The enclosure features high
dampening, is impact resistant and weather proof
(sheltered).
The LB3‑PC250 and LB3‑PC350 are suited for
locations where high sound pressure, wide‑band audio
is needed and where there is no mains power or
where active loudspeakers are not desired, like
outside applications or applications where the