47. Main L/R Faders
These two faders are the final level control for the Main Left
and Right audio feeds, sent to the Main L and R outputs. These
faders are possibly fed by the various mono and stereo channels,
as well as AUX and EFX returns and 2T inputs, depending on
the your selections. When pushed all the way up, these faders
provide 10 dB of gain to the signal, and, when set all the way
down, effectively mute the signal.
48. +48V Indicator
This indicator will illuminate when Phantom Power is activated.
49. Power Indicator
The Power Indicator will light up when the power of the mixer is
on; in case you weren't too sure.
50. Level Meter
These dual 11- or 12-segment level meters give an accurate
indication of when audio levels of the Main L/R output
signals reach certain levels. The 0 dB indicator illuminates is
approximately equal to an output level of +4 dBu, and the PEAK
indicator illuminates about 6 dB before the signal is dynamically
clipped. It is suggested for the maximum use of audio to set the
various levels controls so that it sits steadily between 0 and 8 dB
to make full use of audio, while still maintaining fantastic clarity.
When no signal is being fed through the Main L/R mixing bus, the
level meter will then display the audio properties of the Control
Room / Phones feed. This is especially helpful when setting the
levels of each individual channel, as is shown in the Channel
Setup section of this manual. The "Solo" button will illuminate
when the Level Meter displays the audio properties of the Control
Room / Phones signal.
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AM442D USB / AM642D USB
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51. Graphic Equalizer (AM642D USB only)
This stereo 9 band graphic equalizer allows the user to adjust
the frequency response of a signal, with a maximum of ±12 dB of
signal boost or cut for each of the frequencies. The AUX 1 / MAIN
switch alternates the use of the equalizer between the use of the
AUX 1 bus and MAIN L/R bus signals. Pushing the on button in
activates the equalizer, which is accompanied by an illuminated
LED.
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