Channel Controls - Phonic CELEUS 800 Manual Del Usuario

Channel Controls

19. Low Cut Filter (75 Hz)
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.
20. Gain Control
This controls the sensitivity of the input
signal of the Line/Microphone input
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 that will allow the peak indicator
occasionally illuminate.
21. HIGH (High Frequency) Control
This control is used 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.
22. MID (Middle Frequency) Control
This control is used to provide a peaking
style of boost and cut to the level of
middle frequency sounds at a range of
±15 dB. These 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
sometimes more desirable to cut middle
frequency sounds rather than boost them, soothing overly harsh
vocal and instrument sounds in the audio.
Stereo channels of the CELEUS 800 mixers feature a High-Mid
and Low-Mid control instead of the typical controls described
above. They provide a peaking style of boost and cut to middle
frequencies, where the frequencies are set at 3 kHz and 800 Hz
(High-Mid is set at 3 kHz and Low-Mid is set at 800 Hz)
23. LOW (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.
24. AUX Control and Pre/Post
These controls alter the signal level that is being sent to the AUX
1 and 2 mixes, the signal of which is suitable for connecting stage
monitors, allowing artists to listen to the music that is being playing.
Also included on AUX 2 is a Pre/Post button, which alternates the
feed to the AUX 2 mix between a post- and pre-fader feed.
CELEUS 800
25. EFX Control
This control alters the signal level that is sent to the AUX 3 send
output and the built-in digital effect processor. The EFX send
signal can be used in conjunction with external signal processors
(this signal of which can be returned to mixer via the AUX return
input), or simply as an additional auxiliary output.
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26. Pan / Balance Controls
20 This alternates the degree or level of audio that the left and right
side of the main mix should receive. On mono channels, the PAN
control will adjust the level that the left and right should receive
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(pan), where as on a stereo channel, adjusting the BAL control
will attenuate the left or right audio signals accordingly (balance).
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27. On Button and Indicator
This turns the channel on, allowing the user to use the feed from
the channel's inputs to supply the MAIN L/R, GROUP 1/2, AUX
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and EFX mixes. The corresponding indicator will be illuminated
when turned on.
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28. 1-2 and L/R Buttons
These handy buttons allow you to decide the audio path of the
corresponding channel. Pushing the "1-2" button allows the signal
to be sent to the Group 1-2 mix, where the "L/R" allows it to be sent
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to the Main L/R mix.
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29. Peak Indicator
This LED indicator will illuminate when the channel hits high
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peaks, 6 dB before overload occurs. It is best to adjust the channel
level control so as to allow the PEAK indicator to light up on regular
intervals only. This will ensure a greater dynamic range of audio.
This doubles as the SOLO indicator, lighting up when the channel's
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SOLO is activated.
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30. Solo Button
The Solo button is pushed to allow the signal of a corresponding
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channel to be sent to the Control Room / Phones control (pre or
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post fader, depending on the properties selected by the pre / post
button, located by the Control Room / Phones control), for use
with either headphones or studio monitors. This also allows easier
setting of the input gain and tracking of audio by sound engineers.
31. Channel Fader
This control will alter the signal level that is sent from the
corresponding channel to the main mix.
32. +4 / -10 Buttons
These buttons, located on stereo channels,
are used adjust the input sensitivity of the
corresponding channel, which will adapt the
mixer to external devices which may use
different operating levels. If the input source is
-10 dBu (consumer audio standard), it is best
to engage the switch, allowing the signal to be heard. If the input
source is +4 dbV (professional audio standard) the corresponding
input channel's button should be disengaged. If you are unsure of
the source's operating level, leave the switch disengaged until you
test the source's signal.
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