Proel MLX3642 - Manuale (Pagina 22)

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129. MAIN MUTE switch
Engage the MAIN MUTE switch and instantly the entire MAIN MIX is switched off.
130. MAIN MUTE indicator
When the MUTE switch is engaged this LED lights.
131. MAIN BAL control
It adjusts the amount of MAIN MIX signal sent to the left versus the right outputs, usually left centered can be used to
check the audio system connection at the beginning of the sound check.
132. MAIN MIX FADER level control
The MAIN MIX FADER controls the output level just before the MAIN MIX outputs. When the fader is fully down the
MAIN MIX is off , the “0” marking indicates a 0 dBu nominal output level.
133. MAIN MIX B L & R xlr output (balanced)
These XLR connectors provide a balanced line-level signal that represents the fully mixed stereo signal controlled by
the MAIN MIX B potentiometer. You can use these to an alternative output of the MAIN MIX for sub arrays, or another
sound system delay processed, or an external recorder, or for broadcasting.
134. MAIN B STEREO/MONO switch
Push this switch to send a mono signals to both L and R MAIN MIX B outputs.
135. MAIN B PRE/POST switch
Push this switch to set the MAIN MIX B as dependent of MAIN MIX FADER position.
136. MAIN MIX B level control
The MAIN MIX B level controls the output level just before the MAIN MIX B outputs.
137. POWER LED
Indicates when the mixer is switched on.
138. L & R LEVEL METERS
The level meters are made of two columns of LEDs with three colours to indicate different ranges of signal level:
• green = shows the normal operative level of the signal (from -30 to +7 dBu)
• yellow = shows a pre-alert operative level of the signal (from +10 to +13 dBu)
• red = shows a high signal level (near +20 dBu CLIP level).
If no SOLO switch is engaged, the meters display the MAIN MIX level (post fader).
If one or more SOLO switches are engaged, the meters display the solo information. If the SOLO MODE is set as PFL (pre
fader level) the meters show only a mono signal on left column, if it is set as AFL (after fader level) they show the stereo
signal after the channel FADER and PAN/BAL controls.
NOTE: in order to obtain a proper visualization, we recommend to press only one switch at a time.
139. AFL LED
Indicates when SOLO MODE is set as AFL: AFTER-FADER LEVEL.
140. PFL LED
Indicates when SOLO MODE is set as PFL: PRE-FADER LEVEL.
141. SOLO MODE switch
Allows to select if the listening and the visualization of the channels selected with the SOLO buttons are PRE FADER
(PFL) or POST FADER (AFL).
- PFL: PRE-FADER LEVEL, the input signal, already controlled by the channel EQ, is shown on the LED METERS and sent
to the PHONES/MONITOR outputs. The PFL mode has to be used for setting the right level of the input signal (usually
around 0 dB) and to avoid input saturation and distortion.
- AFL: AFTER-FADER LEVEL, the input signal, already controlled by the channel EQ and by the channel fader and pan,
is shown on the LED METERS and sent to the PHONES/MONITOR outputs.
142. PHONES A-B stereo jack output
STEREO JACK connectors for the headphones output: only stereo headphones with a minimum impedance of 32 Ohms
should be connected to this output. They can be used to monitor the MAIN MIX or AFL/PFL SOLO.
143. MONITOR jack outputs
These JACK connectors provide an unbalanced line-level signal that can be used to monitor the MAIN MIX or AFL/PFL
SOLO.
144. PHONES LEVEL control
This controls the PHONES output’s level.