INPUTS AND OUTPUTS
Mono Input Channels
There are 16 and 24 mono channels on the AM2442FX and
AM3242FX, respectively. To follow you will find details on how
these channels work; how to make a connection, how to adjust
the various controls, and how to ensure you get those most out
of your mixer.
1. Microphone Input
These jacks accept typical 3-pin XLR inputs
for balanced and unbalanced signals. They
can be used in conjunction with microphones
– such as professional condenser, dynamic
or ribbon microphones - with standard XLR
male connectors, and feature low noise
preamplifiers, serving for crystal clear sound
replication.
NB. When these inputs are used with condenser
microphones, the Phantom Power should be
activated. However, when Phantom Power button is
engaged, single ended (unbalanced) microphones
and instruments should not be used on the Mic
inputs.
2. Line Input
This input accepts typical 1/4" TRS or TS inputs, for balanced or
unbalanced signals. There are various numbers of these inputs
depending which mixer you are using. They can be used in
conjunction with various line level devices, such as keyboards,
drum machines, electric guitars, and a variety of other electric
instruments.
3. Insert Point
Located on all mono channels, the primary use for these TRS
phone jacks is for the addition of external devices, such as
dynamic processors or equalizers, to the corresponding mono
input channel. This will require a Y cord that can send and receive
signals of the mixer to and from an external processor.
4. Gain Control
This controls the sensitivity of the input signal of the Line and
Microphone inputs of mono channels. The gain should be adjusted
to a level that allows the maximum use of the audio, while still
maintaining the quality of the feed. This can be accomplished by
adjusting it to a level slightly below that which will cause the peak
indicator to light up.
5. Low Cut Filter
Located on all mono channels, this button will activate a high-pass
filter that reduces all frequencies below 75 Hz at 18 dB per Octave,
helping to remove any unwanted ground noise or stage rumble.
Stereo channels does not feature this low cut filter.
6. High Frequency Control
Use it to give a shelving boost or cut of ±15 dB to high frequency
(12 kHz) sounds. This will adjust the amount of treble included in
the audio of the channel, adding strength and crispness to sounds
such as guitars, cymbals, and synthesizers.
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7. Mid Frequency Control
You can provide a peaking style of boost and cut to the level of
midrange frequency sounds at a range of ±15 dB with this control.
The AM mixers also provide a sweep control, allowing you to select
a center frequency between 100 Hz and 8 kHz. 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, soothing overly
harsh vocal and instrument sounds in the audio.
8. 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
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punch to drums and bass guitars.
9. AUX Controls
These four AUX controls alters the signal level that is being sent
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to the auxiliary 1 to 4 mixing buses, the signal of which is suitable
for connecting stage monitors, allowing artists to listen to music
that is being played. AUX 1 and 2 feature a Pre/Post button, which
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alternates the feed to the AUX mixing bus between a post and
pre-fader feed. AUX 3, on the other hand, acts as an EFX send,
the signal of which can be used in conjunction with external signal
processors (which can be returned to the mixer via the AUX return
input), or simply as an Auxiliary output. Both the AUX 3 (EFX)
and AUX 4 controls are post fader and are sent directly to the
corresponding outputs.
10. AUX Pre/Post Button
This button allows users to switch the signal sent to the AUX 1 and
AUX 2 mixes from the corresponding input channel between a pre
fader and post fader signal. Pushed in, the signal is post-fader;
released, it's a pre-fader signal.
11. Pan Control
This alternates the degree or level of the mono audio signal that
the left and right channels of the main mix should receive.
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AM2442FX / AM3242FX