Bedienungsanleitung Soundcraft MPMi (Seite 44 von 60) (Englisch)

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42 Soundcraft MFXi MPMi User Guide Issue 1210

USING YOUR MFXi/MPMi CONSOLE

The nal output from your sound system can only ever be as good as the

weakest link in the chain, and especially important is the quality of the

source signal because this is the starting point of the chain. Just as you

need to become familiar with the control functions of your mixer, so you

must recognise the importance of correct choice of inputs, microphone

placement and input channel settings. However, no amount of careful

setting up can take account of the spontaneity and unpredictability of

live performance. The mixer must be set up to provide “spare” control

range to compensate for changing microphone position and the absorp-

tion effect of a large audience (different acoustic characteristics from

soundcheck to show).

MICROPHONE PLACEMENT

Careful microphone placement and the choice of a suitable type of micro-

phone for the job is one of the essentials of successful sound reinforce-

ment. The diagrams on the left show the different pick-up patterns for

the most common types of microphone. Cardioid microphones are most

sensitive to sound coming from in front, and hypercardioid microphones

offer even greater directivity, with a small amount of pickup behind the

microphone. These types are ideal for recording vocalists or instruments,

where rejection of unwanted sounds and elimination of feedback is impor-

tant. The aim should be to place the microphone as close as physically

possible to the source, to cut out unwanted surrounding sounds, allow a

lower gain setting on the mixer and avoid feedback. Also a well chosen and

well placed microphone should not need any appreciable equalisation.

There are no exact rules - let your ears be the judge. In the end, the

position that gives the desired effect is the correct position!

INITIAL SETUP

Once you have connected up your system (see the sections on connec-

tion and wiring earlier in this manual for guidance) you are ready to set

initial positions for the controls on your mixer.

Set up individual input channel as follows:

• Connect your sources (microphone, keyboard etc.) to the required

inputs.

WARNING: Phantom powered mics should be connected before the

+48V is switched on. Ensure the PA system is OFF when switching

phantom power on or off.

• Set Master faders at 0, input faders at 0, and set power amplier

levels to about 70%.

• Provide a typical performance level signal and press the PFL button

on the rst channel, monitoring the level on the bargraph meters.

• Adjust the input gain until the meter display is in the amber section,

with occasional peaks to the rst red LED at a typical maximum

source level. This allows sufcient headroom to accommodate

peaks and establishes the maximum level for normal operation

(but see note below).

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Soundcraft MPMi Seite 44

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