Phonic HELIX BOARD 12 FIREWIRE MKII Manual Del Usuario página 8

20. 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.
21. 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 often
more desirable to cut middle frequency sounds
rather than boost them, thereby soothing overly
harsh vocal and instrument sounds in the audio.
22. 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.
23. FireWire Pre / Post Switch
This switch is used to change the signal of the
corresponding channel that is sent to the Computer
via the FireWire interface between that of a pre-EQ,
pre-fader, pre-low cut to that of a post-EQ, post-
fader, post-low cut. In the upper-most position, the
channel will be pre, and in the lower position post.
24. AUX 1 (Monitor) Control
This control allows the user to send the corresponding
signal to the AUX 1 output, which can be used in
conjunction with an amplifier and studio or stage
monitors, or simply as an auxiliary output for any
means required. The control is pre-fader, therefore
any changes made to the corresponding channel
level control do not affect the AUX 1 send signal.
25. AUX 2 (Effects) Control
This control alters the signal level that is sent to the
AUX 2 (or EFX) send output, which can be used
in conjunction with external signal processors (this
signal of which can be returned to mixer via the AUX
return input, or any stereo input channel), or simply
as an auxiliary output for any means required. This
control is post-fader, therefore any changes made
to the corresponding channel level control are also
applied to the EFX signal. The EFX send signal is
also sent to the built-in effect processor for providing
effects to the main output and AUX 1 send, as
required.
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26. Pan / Balance Controls
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), where as
on a stereo channel, adjusting the BAL control will
attenuate the left or right audio signals accordingly
(balance).
27. Mute / ALT 3-4
This handy little button is basically a typical mute
button – effectively stopping any signal received by
the channel from being sent to the Main L/R or AUX 2
send mixing buses – however it does so much more.
Pushing this button routes the channel's signal away
from the Main L/R and to its own "Alternate" stereo
output (Alt 3-4), where the signal can be used at
will. If you wish to use it to connect an amplifier and
speakers, or simply patch it through to an unused
input channel, you can easily do so.
28. 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. This will
ensure a greater dynamic range of audio. This LED
will light up while the Mute button is pushed in.
29. Level Control
This rotary control will alter the signal level that is
sent from the corresponding channel to the Main or
Alt. 3-4 mixing bus.
HELIX BOARD 12 FIREWIRE MKII