Bosch LB20-PC40-4L, LB20-PC40-4D Specsheet

Communications Systems | LB20-PC40-4 Speaker 4" cabinet 8 Ohm pair

LB20-PC40-4 Speaker 4" cabinet 8 Ohm
pair

www.boschsecurity.com

u Innovative mount system is included for quick,

simple, and reliable installations

The LB20-PC40-4 from Bosch is a high-performance,
two-way, full-range, 4 inch (102 mm) surface mount
speaker with excellent wide, uniform coverage, and
outstanding performance. It is designed for
background and foreground music, paging, and sound
reinforcement, and it's ideal for a wide variety of
indoor and outdoor applications, such as restaurants,
bars, patios, retail, fitness clubs, hospitality, theme
parks, leisure venues, and others. With unparalleled
ease-of-installation, sturdy weather resistance, modern
and delicate look, and its flexible mounting options,
the LB20-PC40-4 is the perfect solution for a wide
variety of surface mount applications.
The LB20-PC40-4 includes the unique and innovative
mount system, from Bosch, making every installation
quick, simple, and reliable. The mounting system
allows for 90 degrees of rotation horizontally, and 45
degrees of rotation vertically, and it can be easily
installed on walls and ceilings. The mounting system
comes already assembled and ready to be used, ready
to make any job easier.

u Carefully engineered for outdoor environments

(IP54), without compromising performance

u Long throw 4" (102 mm) woofer housed in a fire

rated ABS plastic enclosure for extended LF
performance down to 75 Hz

u 40 W power handling provides for 103 dB maximum

SPL (109 dB peak)

u 70/100 V transformer version (LB20-PC15-4)

available for constant voltage systems

The LB20-PC40-4 has been carefully engineered to
resist outdoor environments, without compromising
on performance for indoor applications. The full-range
speaker is IP54 rated, and its weather-proofing is
complemented with exceptional cabinet and grille
resistance against sun, salt and moisture.
All LB20 models are available in black or white, and
can be easily painted to match the décor. Transformer
versions are also available for constant voltage
systems.
The wide range of LB20 surface mount speakers has
been designed to work together as a complete system
in a variety of different surface mount constructions,
and to be used in combination with other LB20 ceiling
and in-wall speakers.

| LB20-PC40-4 Speaker 4" cabinet 8 Ohm pair

2

Certifications and approvals

Region Regulatory compliance/quality marks

Europe CE

Technical specifications

Frequency response (-3 dB): 100 Hz - 20 kHz

Frequency response (-10 dB): 75 Hz - 20 kHz

Sensitivity: 87 dB

Max SPL (calculated): 103 dB (109 dB Peak)

Coverage angle: Horizontal 110°, Vertical 110°

Power handling: 40 W (160 W Peak) Continuous

Low Z: Yes

Nominal impedance: 8 Ω

Minimum impedance: 6 Ω

Recommended High-Pass: 70 Hz (24 dB/octave)

Input transformer (70V/100V): No

LF transducer: 4 inch (102 mm)

HF transducer: 0.75 inch (20 mm)

Connectors: Captive screws on wall bracket.

Environmental: IP54 (per IEC-60529)

Color: Black or white

Dimensions (H x W x D): 193 mm x 140 mm x 120 mm

Net weight: 1.5 kg (3.3 lb)

Shipping weight (pair): 5 kg (11.0 lb)

Included hardware: Mounting bracket and 4-mm Allen

Packaged quantity: 2

1

Half-space (wall mounting).

2

Half-space (on wall) averaged 100 Hz - 10 kHz, 1 W.

3

Without brackets.

2

Pink Noise (100 hours)

Removable locking 4-pin connector
(Euroblock) - (2) for connection to
additional speakers in a distributed
line. Max. wire size 12AWG (2.5
mm)

(7.6 in x 5.5 in x 4.7 in)

wrench

1

1

3

Frequency response and impedance:

Architectural and engineering specifications:

The loudspeaker shall be a surface mount, two-way,
full-range system, with an internal passive crossover.
The loudspeaker's low-frequency transducer shall be a
4" (102 mm) woofer, with a weather resistant poly
propylene cone, and a 1" (25 mm) voice-coil. The
loudspeaker's high-frequency transducer shall be a

0.75" (20 mm) Ferro fluid cooled driver.
The loudspeaker system shall meet the following
performance criteria: Power handling, 40 W of IEC
60268-5 continuous pink noise (6 dB crest factor);
Frequency response, 75 Hz - 20 kHz (-10 dB from rated
sensitivity); Sensitivity, 87 dB at one watt, 100 Hz - 10
kHz at one meter; Impedance, 8 Ohm nominal, 6 Ohm
minimum.
The high-frequency transducer shall drive a waveguide
to cover evenly 110° horizontally by 110° vertically.
The finish shall be paintable black (RAL 9004) or
paintable white (RAL 9003). The grille shall be zinc
plated, and powder coated for corrosion resistance.
The loudspeaker shall be adjustable over a range of
90° horizontally and 45° vertically. The support
bracket shall be integral with the enclosure.
The loudspeaker shall have a ball-and-socket mounting
system with a quick attach and detach operation.
Electrical connections shall be through the wall­portion of the mounting system, and there should be
no exposed wire. The loudspeaker shall have a
secondary electrical connection through a 4-pin
detachable Euroblock connector.
The system shall be weather resistant to IEC
60068-2-5 Solar Radiation, IEC 60068-2-11 Salt Mist,
IEC 60068-2-42 SO2, IEC 60068-2-60 Chlorine, and IEC
60529 IP54 test conditions. The mounting system shall
be EIA 636 tested, at a safety factor of 8:1 or better.
The enclosure shall be molded of fire rated ABS
plastic. The loudspeaker shall weigh 1.5 kg (3.3 lb)
and its dimensions shall be 193 mm (7.6 in) high, 140
mm (5.5 in) wide, and 120 mm (4.7 in) deep.
The surface mount loudspeaker shall be the
LB20-PC40-4 model from Bosch.