The document provides information on Bosch volume controls and program selectors for public address systems in Japan. It describes the LBC 14x2/x0 volume controls, which come in 12W and 36W versions and power-save or failsafe options. It also describes the LBC 1434/10 program selector, which allows selecting between 5 channels. The components comply with international safety standards and have applications in both announcements and background music distribution in public settings.

1. Communications Systems | LBC 14x2/x0 Japanese Volume Controls and LBC 1434/10 Program Selector
LBC 14x2/x0 Japanese Volume Controls
and LBC 1434/10 Program Selector
▶ 12 W and 36 W versions
▶ Available in power-save or failsafe versions
▶ Built-in 24 VDC override relay
▶ Suitable for 3-wire and 4-wire systems
▶ Program selector with up to five channels
▶ Complies with international installation and safety
regulations
Bosch introduces a full range of volume controls and The design and color are unobtrusive in any interior. Ease
program selectors to provide a complete public address of installation, operation and reliability is optimized in the
solution. design.
Interconnections
Screw connections
Functions
Operation
Public address systems are often used for both Certifications and Approvals
announcements and background music distribution.
Volume controls can be used to adjust the level locally. In Region Certification
addition to volume control, program selectors can also be Europe CE LBC 14xx/10
installed to select five different programs locally. In the
LBC 14xx/20
event of an (emergency) announcement, the built-in relay
ensures that the message is broadcast at a preset level, Safety acc. to EN 60065
independent of the local volume setting. Self-extinguishing acc. to UL 94 VO
The volume controls come in two versions according to
power rating: 12 W and 36 W. The total load of the
loudspeakers connected to a volume control may not
exceed the rated power.
Each of the three versions is also available in two
versions. One is a power-saving, 4-wire volume override (/
10 models), where the override relay is activated during
an emergency call. The other is a failsafe, 4-wire volume
override (/20 models), where the override relay is
deactivated during an emergency call.
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2. 2 | LBC 14x2/x0 Japanese Volume Controls and LBC 1434/10 Program Selector
Installation/Configuration Notes
61 (2.40)
46.5 (1.83)
46.5 (1.83)
35 (1.38)
114.1 (4.49)
82.6 (3.25)
36.5 (1.44)
11.2 (0.44)
82.6 (3.25)
105 (4.13)
18 (0.71)
11.4 (0.45)
42.2 (1.66)
17.5 (0.69)
42.2 (1.66)
70.1 (2.76)
70 (2.76) 70 (2.76)
20.8 (0.82)
19.8 (0.78)
72.5 (2.85)
114 (4.48)
74.5 (2.93)
114 (4.48)
42.2 (1.66)
20.9 (0.82)
19.9 (0.78)
37 (1.46) 18 (0.71)
11.2 (0.44)
37 (1.46) 17.5 (0.69)
11.5 (0.44)
LBC 1412/10 and LBC 1412/20 dimensions in mm
LBC 1402/10 and LBC 1402/20 dimensions in mm

3. LBC 14x2/x0 Japanese Volume Controls and LBC 1434/10 Program Selector | 3
61 (2.40)
46.5 (1.83)
82.60 (3.25)
35 (1.38)
105 (4.13)
70 (2.76)
19.7 (0.77)
LBC 1402/20 circuit diagram
74.5 (2.93)
114 (4.48)
19.8 (0.78)
37 (1.46) 17.75 (0.70)
11.15 (0.44)
LBC 1434/10 dimensions in mm
LBC 1412/10 circuit diagram
LBC 1402/10 circuit diagram
LBC 1412/20 circuit diagram
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4. 4 | LBC 14x2/x0 Japanese Volume Controls and LBC 1434/10 Program Selector
LBC 1402/10 and /20
Weight 260 g
Color Off-white (RAL 9010)
LBC 1434/10
Dimensions (W x H x D) 70 x 114 x 48.2 mm
Weight 200 g
Color Off-white (RAL 9010)
Environmental
Operating temperature -10 ºC to +55 ºC (14 ºF to +131 ºF)
Storage temperature -40 ºC to +70 ºC (-40 ºF to +158 ºF)
Relative humidity <95%
LBC 1434/10 circuit diagram
Ordering Information
Technical Specifications LBC 1402/10 Volume Control LBC1402/10
12 W, Japanese, power-save version
Electrical
LBC 1402/20 Volume Control LBC1402/20
LBC 1402/10 and /20 12 W, Japanese, failsafe version
Rated power 12 W LBC 1412/10 Volume Control LBC1412/10
36 W, Japanese, power-save version
Input voltage 100 V
LBC 1412/20 Volume Control LBC1412/20
Attenuation steps 5 x 3 dB + off
36 W, Japanese, failsafe version
Frequency response 50 Hz to 20 kHz (-1 dB)
LBC 1434/10 Program Selector LBC1434/10
THD <0.5% 5-channel, Japanese
Current consumption 20 mA at 24 VDC
LBC 1412/10 and /20
Rated power 36 W
Input voltage 100 V
Attenuation steps 8 x 3 dB + off
Frequency response 50 Hz to 20 kHz (-1 dB)
THD <0.5%
Current consumption 20 mA at 24 VDC
LBC 1434/10
Rated power 100 W
Input voltage 100 V
Number of programs 5 programs + off
Mechanical
LBC 1402/10 and /20
Dimensions (W x H x D) 70 x 114 x 48.2 mm
Weight 210 g
Color Off-white (RAL 9010)
LBC 1412/10 and /20
Dimensions (W x H x D) 70 x 114 x 48.2 mm
Americas: Europe, Middle East, Africa: Asia-Pacific: Represented by
Bosch Communications Systems Bosch Security Systems B.V. Robert Bosch (SEA) Pte Ltd
12000 Portland Avenue South P.O. Box 80002 11 Bishan Street 21
Burnsville, Minnesota 55337, USA 5600 JB Eindhoven, The Netherlands Singapore 573943
Phone: +1-800-392-3497 Phone: + 31 40 2577 284 Phone: +65 6571 2600
Fax: +1-800-955-6831 Fax: +31 40 2577 330 Fax: +65 6571 2698
audiosupport@us.bosch.com emea.securitysystems@bosch.com apr.securitysystems@bosch.com
www.boschsecurity.com www.boschsecurity.com www.boschsecurity.com
© Bosch Security Systems Inc. 011 | Data subject to change without notice
T3499561611 | Cur: en-US, V19, 27 Jan 2011