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Operation

Install Lectern Microphone

The gooseneck lectern microphone plugs into the three-pin receptacle located on the top of the lectern.

Connect Power

Use the power cord supplied.  Plug one end of the cord into the receptacle on the lectern labeled AC LINE INPUT.  Plug the
other end of the cord into a properly grounded three-wire AC receptacle.

Caution:

For safe operation, it is important to ground the amplifier properly.  Do not attempt to defeat the grounding pin of

the 3-wire plug.  If you use 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 LECTERN MIC control to a comfortable listening level.
Rotate the BASS and TREBLE controls as necessary to enhance audio output.

Adjusting Reading Lamp

The lamp is controlled by the amplifier POWER switch.  Use the switch on the lamp line cord to set the lamp to always on or
always off.

Page 5 of 8

Содержание MLA40

Страница 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 ...

Страница 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 ...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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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