Bogen MLA40 Service Manual

Modular Lectern Array

Models MLA40, MLA40T (Top)

Instruction Manual

© 2000 Bogen Communications, Inc.
All rights reserved.
54-5001-02R2 0007
Printed in U.S.A.

Notice

Every effort was made to ensure that the information in this
guide was complete and accurate at the time of printing.
However, this information is subject to change.

Important Safety Information

Always follow these basic safety precautions when installing
and using the unit:

1. Read all instructions.

2. Follow all warnings and instructions marked on the
product.

3. DO NOT block or cover the ventilation slots and
openings. They prevent the product from overheating.
DO NOT place the product in a separate enclosure or
cabinet, unless proper ventilation is provided.

4. Never spill liquid on the product or drop objects into the
ventilation slots and openings. Doing so may result in
serious damage to the components.

5. Repair or service must be performed by a factory
authorized repair facility.

6. The product is provided with a UL-CSA approved, 3-wire
ground type plug. This is a safety feature. DO NOT defeat
the safety purpose of the grounding type plug. DO NOT
staple or otherwise attach the AC power supply cord to
building surfaces.

7. DO NOT use the product near water or in a wet or
damp place (such as a wet basement).

8. DO NOT use extension cords. The product must be
installed within 6 feet of a grounded outlet receptacle.

9. DO NOT install telephone wiring during a lightning
storm.

10. DO NOT install telephone jacks in a wet location unless
the jack is specifically designed for wet locations.

11. Never touch uninsulated wires or terminals, unless the
line has been disconnected at the paging or controller
interface.

12. Use caution when installing or modifying paging or
control lines.

Maintenance & Service

Caution

There are no user-serviceable parts within the unit. Have all
internal servicing performed by a qualified technician. The war­ranty will become void if repairs are made by other than the
Bogen Service Department or an authorized service agency.

Our Applications Engineering Department is available to help
you troubleshoot problems with your Bogen equipment.
Engineers are available from 8:30 AM to 6:00 PM, Eastern
Standard Time. Phone [phone].

Service can be obtained from our factory service department.
No merchandise may be returned for repair without prior
written authorization. Please contact our factory service
department at 1-800-999-2809 for a RA number. Only mer­chandise specified in the return authorization form can be
returned to obtain warranty or non-warranty repair. When
shipping your unit, pack your system well using the original
shipping carton or a similar container and filler material to
prevent damage in transit. Send the unit fully insured and pre­paid via UPS or other responsible carrier.

Domestic and International Listings

UL and CSA Listed.

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Introduction

Bogen’s MLA lecterns represent an innovative approach to podium and table-top lectern design. The multi-speaker array con­cept offers wider horizontal dispersion than traditional podium style lecterns. The modular design ensures flexibility.
Performance advantages make it well suited for demanding applications in schools, churches, hotel and rental situations.

Please take the time to read the instructions. You will receive the greatest benefit if you understand how the system oper­ates.

System Overview

The MLA40 consists of two modular components: the table-top portion and the podium base.

The MLA40T is a table-top only lectern.

The MLA40 contains the amplifier and a 2 speaker array.

The podium base contains a 4 speaker array. It connects electrically to the MLA40T table-top section. The MLA40T consists
of the amplifier and a 2-speaker array. Note: The MLA40 can be unassembled so that it can also be used as a table-top only
lectern, when needed. The amplifier is specifically designed to meet virtually all applications needs.

It includes:

• 2 microphone inputs (Mic 1 and Lectern Mic)

• Aux input for a music source

• Tape out to a tape recorder or secondary amplifier

• Phantom power (DC power for certain types of microphones)

• Automatic Level Control (ALC)

• Speech filter (reduces low-frequency feedback)

• Bass and Treble controls

• Switched and unswitched outputs for external systems.

The product is shipped unassembled. Before attempting to assemble or operate the system, please read through these
instructions to familiarize yourself with the unit.

Assembly

Begin assembly by removing contents from cartons. Handle all parts carefully to avoid damage to finished surfaces.

Carton 1 Contents (MLA40T/Top for table-top version, this is the only carton you will receive.):

• MLA40T lectern top section

• Gooseneck microphone

• Power cords (2)

• 4 plastic feet

• 4 Mounting bolts (1/4” x 20, round head)

• Instruction manual

Carton 2 Contents (MLA40B/Base):

• Base with casters

• Speaker column

• Connecting plate

• 4 round head bolts (1/4” x 20)

• 4 flat head bolts (1/4” x 20)

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