AUSTRALIAN MONITOR MX81 설치 및 운영 매뉴얼 - 페이지 8

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BASIC SETUP & OPERATION

The inputs of the MX81 can accommodate a wide range of sources

including dynamic microphones, DVD and CD players. The output

may be used to drive power (booster) amplifiers, other mixers or

mixer amplifiers.

Each installation will require setting the appropriate relative mix of

levels between microphones and program. Because of the variation

in levels between the possible sources, the MX61 offers a number of

gain stage adjustments so you can set the correct levels for your

application. Also consider what the output is driving . . .

Setting up correct gain structure through the whole system is

important to achieve optimal results. The following step by step

procedure has been devised to assist during the setup process.

When the MX61 was shipped to you from the factory, it was set up

in a particular way. In the following procedure it is essential that

you are starting from these initial settings.

• Program Input Gain Controls – half (12 o'clock)

• XLR Mic/Line switch – MIC

• XLR Phantom power - on

• Input Level Controls – off

• Output Level Control – off

PAGE 8

STEP BY STEP SETUP

CONNECT THE SOURCES

First connect all the required sources to the appropriate input

connectors. If the source is a microphone, set the MIC/LINE

switches to the "MIC" position. If the source is an electret or

condenser microphone, set the phantom switch to the "P/P on"

position.

CONNECT THE OUTPUTS

Turn the amplifiers off. Connect the MX81 output to the amplifiers'

line level input. Check that the MX81 is on, and then turn on the

amplifiers. If the amplifiers have a level control, set them it to a

sensitivity of 0dBu. If in doubt, set it to maximum.

TEST THE INPUT LEVELS

For each source, try to achieve the highest signal level possible.

i.e. for a CD player, cassette deck or other music source, put on

the loudest anticipated program music or for a paging mic make a

'loud' page. During this signal condition, the input status LED should

light green and may occasionally turn red for a short period.

If the status LED stays red (more than 10% of the time), you should

reduce the input gain trim. If the status LED never turns red at all,

you may wish to increase the input gain trim if required.

SET THE LEVELS

Turn the input levels up to 5. Turn up the output level until it is

at an appropriate level for the listening environment. You will

now have to adjust the relative levels of the inputs to achieve a

good balance. The aim of these adjustments is to have all level

controls at between 3 and 7. This may not be possible however.

A good rule of thumb is that input level controls should be higher

than the output level controls.

MX81 INSTALLATION & OPERATION MANUAL