Phonic AM1204 Manual Del Usuario página 9

20. Middle Frequency Control
This control is used to provide a peaking style of boost and
cut to the level of middle
frequency (2.5 kHz) sounds at
a range of ±15 dB. Changing
middle frequencies of an audio
feed can be rather difficult
when used in a professional
audio mix, as it is usually
more desirable to cut middle
frequency sounds rather
than boost them, thereby
soothing overly harsh vocal
and instrument sounds in the
audio.
21. Low Frequency Control
This control is used to give a
shelving boost or cut of ±15
dB to low frequency (80 Hz)
sounds. This will adjust the
amount of bass included in the
audio of the channel, and bring
more warmth and punch to
drums and bass guitars.
22. AUX / EFX Controls
The AUX 1 and 2 controls allow the user to send the corresponding
signal to the AUX 1 and 2 mixes, the final levels of which are
controlled by the AUX Send controls on the main mixing panel.
These signals are then sent to the corresponding AUX Send
Outputs for use with amplifiers and studio or stage monitors, or
simply in conjunction with external processors. AUX 1 features a
pre-fader, pre-EQ signal, while AUX 2's signal is post-fader, post-
EQ. The AUX 2 control doubles EFX control on the AM1204FX
and AM1204FX USB, adjusting the signal that is sent to the built-
in Digital Effects Processor.
23. Pan / Balance Control
This alternates the degree or level of audio that the left and right
side of the main mix should receive. On mono channels, this
control will adjust the level that the left and right should receive
(pan), whereas on a stereo channel, adjusting the BAL control
will increase the left or right audio signals accordingly (balance).
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AM1204 / AM1204FX / AM1204FX USB
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24. Mute Button and Indicator
This button turns a mute on the corresponding channel on and
off, stopping all audio from the channel input to the Main mix.
The corresponding indicator will
be illuminated when the mute is
activated. When a channel is muted,
this audio – which would normally be
wasted – is redirected to the ALT 3-4
mix.
25. Peak Indicator
This LED indicator will illuminate
when the device hits high peaks, 6
dB before overload occurs. It is best
to adjust the gain of the channel so
that the PEAK indicator lights up
on intervals only, if at all. This will
ensure a greater dynamic range of
audio.
26. Level Control
This 60mm fader will alter the
signal level that is sent from the
corresponding channel to the main mix.
27. +4 / -10 Switch
This button, located on both stereo channels, is used adjust the
input sensitivity of the corresponding channels. This will adapt
the channel to external devices that use different operating
levels. If the input source is -10 dBV (consumer audio level), it is
best to engage the switch, allowing the signal to be heard. The
+4 dBu level is suitable for professional audio signals, which are
considerably higher than the consumer level. However, if you are
unsure of the source's operating level, we suggest leaving the
switch disengaged until you test the source's signal. You can then
engage if necessary (if the level of the input signal is obviously
too low).
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