Phonic MM1002a, Руководство пользователя

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PHONIC CORPORATION Page 13 MM1002a/1202a USER’ S MANUAL
32 POWER SUPPLY INPUT SOCKET
Connect the power supply unit to this socket. Make
sure the power supply unit is not plugged into AC
outlet before connecting to the mixer.
33 POWER ON/OFF SWITCH
This switch turns the power of the unit on and off.
To prevent this unit from damaging, move the MAIN
L/R fader all the way down before turning the power.
INITIAL SETUP
The procedure is very important. Even if you do not
like to read manuals, please read this section. Af-
ter you have connected the system, you can begin
the initial set up for every input channel. The match-
ing of every input gain to the signal source is cru-
cial. Every detail affects the final output of the mixer.
Basically, input sensitivity adjustment, channel fader,
and output fader are the main factors. You should
try to set only as much microphone gain as required
to achieve a good balance between signals. If the
input gain is set too low, you will not get enough
gain on the faders to push the signal up to an ad-
equate level. If the input gain is set too high, the
channel fader will need to be pulled down in com-
pensation, leaving greater risk of feedback because
a small fader movement will have a very significant
effect on output level. Certainly, the limited fader
travel path will not be successful in the mixing pro-
cedure. Please use the following set up procedure.
Do not turn the output up until they clip and then
backing off.
FOLLOW THE PROCEDURE FOR EACH
CHANNEL IN USE
• Set all faders and gain controls all the way off.
• Phantom powered microphone should be con-
nected before the +48V is switched on.
• Set power amplifier levels to 70%.
• Set the CTRL RM Level and Headphone level
to about 50%.
• If you want to hear what you are doing, plug
your headphone into the phone output socket,
or hook up your control room amplifier sys-
tem to the Control Room outputs.
• Set EQ control at center position.
• Set PAN and BALANCE knobs at center po-
sition.
• You need a headphone to continue.
• Apply a typical performance level signal, moni-
toring the level on the LED meter.
• Adjust the input gain until the meter shows in
the amber section, with occasional peaks to
the first red LED at maximum source level.
This allows enough headroom to accommo-
date peaks and the maximum level for nor-
mal operation; you can listen to them through
your headphone.
• For microphone sources, the gain control ad-
justment will depend on the kind of the micro-
phone in use. Normally turn the gain clock-
wise around 2~3 clock position. Ask the
singer to perform aloud and do not whisper. If
they do not sing at a normal level while you
are doing the sound check, you might drive
the mixer to overload or produce feedback by
setting the gain too high during the initial set
up.
• Repeat this procedure for all other channels.
When more channels are added to the mixer,
the meters LED may move up to the red sec-
tion. Adjust the overall level using the master
faders if necessary.
INITIAL SETUP