Setting Into Operation - Omnitronic MRS-1202USB Bedienunganleitung

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SETTING INTO OPERATION

Switching on and off
1
Prior to switching on, turn the output controls MASTER and CTRL RM to minimum to avoid damage to
the hearing by a volume which is too high when switching on.
2
If condenser microphones are connected, press the button PHANTOM 48V to switch on a 48 V
phantom power for all XLR jacks. The indicator next to the button lights up.
• If the phantom power is switched on, no microphones with unbalanced output must be
connected. Otherwise these microphones may be damaged. During the stabilization phase
(approx. 1 minute), you must not change any connection.
• To prevent switching noise, only actuate the button PHANTOM POWER when the mixer is
switched off or when the output level controls are set to minimum.
3
Switch on the mixer with the power switch. The power indicator lights up. Switch on the connected
units. After operation, switch off the unit with the power switch.
Basic control
For even sound, every input channel should be adjusted to the same level. Follow this procedure for every
input channel:
1
Set the gain control, the level control, the tone controls and the pan/balance control to mid-position.
Release the button 75 Hz or +4/-10.
2
Feed an audio signal (test signal or music) to the input channel.
3
Adjust the master fader for the overall volume to a level that the subsequent adjustments can be heard
well via a connected PA system.
4
For a mono channel, adjust the gain control so that the level indication lights up at 0 dB. For a stereo
channel, turn up the level control so that the level indication lights up at 0 dB. If the level control must be
turned up to a high extent, press the selector switch +4/-10 for level boosting.
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Adjust the desired sound with the tone controls. By adjusting the tone controls, the high frequencies
(control HIGH), the mid frequencies (control MID) and the low frequencies (control LO) can be boosted
or attenuated. With the controls in mid-position, the frequency response is not affected. If required,
press the selector switch 75 Hz to suppress low-frequent noise for a mono channel.
6
For the mono channels, place the mono signals in the stereo sound with the panorama control PAN,
and for the stereo channels, adjust the balance of the stereo signals with the control BAL.
7
The LED CLIP serves as an overload indication by which the level of the channel can coarsely be
controlled. If it lights up permanently, attenuate the input amplification and/or turn back the tone controls
or reduce the output level of the audio source.
8
Repeat the steps for other channels as described above.
9
When all adjustments for level matching and all sound adjustments have been made, mix the signals of
all audio sources used in the desired volume ratio with the level controls.
10
Via the output meter, adjust the desired level available at the master outputs with the master fader.
Usually an optimum level control is obtained if the output meter shows values in the 0 dB range at
average volume. However, if the output level at the master outputs is too high for the following unit, the
master signal must be controlled to a corresponding lower level. In case of overload the red LEDs CLIP
light up.
CAUTION!
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