BOSCH LBC-1420

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BOSCH LBC 1420 Volume Control (Attenuator)

▶100 Watt versions
▶Available in power-save or failsafe versions
▶Built-in 24 VDC override relay
▶Continuous rotating system
▶Suitable for 3-wire and 4-wire systems
▶Program selector with up to five channels
▶Optional surface mounting box
▶Complies with international installation and safety regulations
▶Bosch introduces a full range of volume controls and program selectors to provide a complete public address solution.

Functions

Operation
Public address systems are often used for both announcements and background music distribution. Volume controls can be used to adjust the level locally. In addition to volume control, program selectors can also be installed to select five different programs locally. In the event of an (emergency) announcement, the built-in relay ensures that the message is broadcast at a preset level, independent of the local volume setting.
The volume controls come in three versions according to power rating: 100 Watt. 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.
The design and color are unobtrusive in any interior. Ease of installation, operation and reliability is optimized in the design.

Interconnections
Screw connections

Certifications and approvals
*Safety acc. to EN 60065
*Self-extinguishing acc. to UL 94 V0

Technical specifications

Electrical

• Rated power : 100 Watt
• Input voltage : 100 V
• Attenuation steps : 10 x 2 dB + off
• Frequency response : 50 Hz to 20 kHz (-1 dB)
• THD : <0.5%
• Current consumption : 20 mA at 24 VDC

Mechanical

• Dimensions (W x H x D) : 87 x 147 x 61.5 mm
• Weight : 512 g (including surface mounting box)
• Color : 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%