Level Control The Microphone Channels; Adjustment Of The Output Channels; Microphone Announcements; Monitoring With Headphones - Omnitronic EM-640 Bedienungsanleitung

6.2 Level control the microphone channels

1. Switch on the corresponding microphone with the button ON AIR of the channel (LED lights).
2. Advance the level control of the microphone channel used to approx. 2/3 of its maximum.
3. Use one of the assignment switches (LED lights) to switch the microphone channel to one of the master
channels to monitor the signal via the speakers of a PA system connected:
button 1 for master channel ZONE 1, button 2 for master channel ZONE 2, button 3 for master channel
ZONE 3.
4. Advance the master control of the master channel used to approx. 2/3 of its maximum.
5. Speak into the microphone. Via the LED level indication of the master channel used, control the level
with the gain control of the microphone channel. An optimum level control is obtained if level values in
the 0 dB range are shown at average volume. If the red LEDs of the level indication light up, there is an
overload of the channel.
6. Adjust the desired sound with the tone controls of the microphone channel. By adjusting the tone
controls, the high frequencies (control HIGH) and the low frequencies (control LOW) can be boosted or
attenuated. With the controls in mid-position, the frequency response is not affected.
7. Repeat the steps for the second connected microphone channel as described above.

6.3 Adjustment of the output channels

The output signal is fed to the adjustable outputs OUT 1 to 3 and to the recording output REC without
individual level control.
1. Use the assignment switches (LEDs light) to assign the input channels to the three master channels as
desired:
button 1 pressed: input channel switched to ZONE 1, button 2 pressed: input channel switched to
ZONE 2, button 3 pressed: input channel switched to ZONE 3.
2. For mixing several audio sources to one master channel, adjust the desired volume ratio of the audio
sources to one another with the channel faders or level controls of the corresponding input channels.
3. Via its LED level indication, control the level of each master output with the master control. Usually an
optimum level control is obtained if the level indication 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.
4. In each master channel, use the 3-way tone control to attenuate or boost the high frequencies (control
TREBLE), the midrange frequencies (control MID), and the low frequencies (control BASS) and readjust
the master level if necessary.
5. The recording signal at the recording output REC is taken off ahead of the output controls, i.e. it is not
affected by the master controls OUT 1 to 3.

6.4 Microphone announcements

1. Switch on the corresponding microphone with the button ON AIR of the channel (LED lights) and use
the assignment switches (LED lights) to switch the microphone channel to the desired master channel:
button 1 pressed: microphone channel switched to ZONE 1, button 2 pressed: microphone channel
switched to ZONE 2, button 3 pressed: microphone channel switched to ZONE 3.
2. To improve the audibility of an announcement during the current music program, activate the talkover
function (press button ON). With the function activated, the levels of the channels 1 to 4 are
automatically attenuated by 15 dB when announcements are made with the microphone. To switch off
the talkover function, unlock the button ON (LED off).
The talkover function always affects both microphone channels.

6.5 Monitoring with headphones

The cue function allows to monitor each of the input channels 1 to 4 via headphones, even if the
corresponding channel fader is set to minimum. Thus, it is possible, e.g. to time the moment for fading in an
audio source. Additionally it is also possible to monitor each master channel of its level control.
1. For prefader listening to an input channel, press the button CUE of the channel (LED above the button
lights).
2. For monitoring a master channel, press the corresponding button CUE OUT 1 to 3 (LED above the
button lights).
3. Adjust the desired headphones volume with the level control.
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