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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.

1

0. 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.

1

2. 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 war-
ranty 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 

1

-800-999-2809.

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 mer-

chandise 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 pre-
paid via UPS or other responsible carrier.

Domestic and International Listings

UL and CSA Listed.

Page 2 of 8

Summary of Contents for MLA40

Page 1: ...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 ...

Page 2: ...ne 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 ...

Page 3: ...s 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 co...

Page 4: ...3 Connect the electrical connectors from the column into the jacks on the underside of the tabletop portion 4 Set the table top section onto the connecting plate and secure with 4 round head bolts 5 If using the MLA40 tabletop section alone or the MLA40T attach the 4 plastic feet to the underside of the tabletop using the 4 round head bolts ELECTRICAL CONNECTORS TABLE TOP UNIT PLASTIC FOOT SEE STE...

Page 5: ... a pigtail adapter to connect the plug to a two wire outlet you must ensure that the adapter is connected properly and that the outlet is properly grounded Apply Power 1 Rotate the MIC and LECTERN MIC controls to their full counterclockwise positions 2 Place the POWER switch in the ON illuminated position Adjust Volume Bass and Treble While speaking into the lectern gooseneck microphone rotate the...

Page 6: ...ce the switch labeled SPEECH FILTER in the ON position to enable the filter Place the switch in the OFF position to bypass the filter ALC The Automatic Level Control keeps the amplifier output constant when different people use the system Place the switch labeled ALC in the IN position to enable the circuit Place the switch in the OUT position to bypass the circuit You should set the volume contro...

Page 7: ...tays in back of the lectern Reduce the volume level Reduce the Treble level Enable the Speech Filter Maintenance The exterior surfaces should be cleaned with a soft cloth moistened with a mild soap solution Do not use abrasives or solvent based cleaners Do not allow liquid to enter the black grille material Service Caution There are no user serviceable parts within the amplifier To avoid an electr...

Page 8: ... Control Action Treble 11dB 10kHz Bass 11dB 100Hz ALC Switch IN OUT Speech Filter 15dB 80Hz Volume Controls MIC 1 Lectern Mic Aux Tone Controls Bass and Treble Switches Phantom Power ALC Speech Filter Power External Speaker Impedance 16 ohms minimum Tape Output 500mV Output Connections Tape Out RCA jack Speaker Out 2 1 4 mono phone jack Auxiliary AC Power 300 watts max unswitched Dimensions MLA40 ...

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