Bosch Plena Mixer Amplifier LBB 1903/10, LBB 1906/10, LBB 1912/10, LBB 1914/10 Installation and Operating Manual

About this manual

This manual provides the information required to install and operate the Bosch Plena Mixer Amplifier for the LBB 1903/10, LBB 1906/10, LBB 1912/10 and LBB 1914/10 models.

It covers safety precautions, front and rear controls, internal VOX and speech‑filter settings, rack installation, external connections (DC supply, microphones, chime, music sources, loudspeakers) and technical data such as electrical performance and environmental conditions.

What's inside

• About the mixer amplifier
• Controls and connections (front)
• Controls and connections (rear)
• Internal settings
• Installation in rack
• External settings and connections
• Operation of mixer amplifier
• Technical data
• Safety precautions

Frequently asked questions

What should be done before cleaning the unit?

Unplug the system units from the mains outlet before cleaning.

What type of power plug does the unit use?

The unit may be equipped with a polarised alternating current line plug or a 3‑wire grounding type plug.

Can the unit be serviced by the user?

Do not attempt to service this unit yourself; refer servicing to qualified personnel.