Rear Panel; Controls And Settings; Channel Controls - Phonic HELIX BOARD 12 FIREWIRE MKII Manual Del Usuario

REAR PANEL

11. Channel Inserts
Located on the rear of the Helix Board, the primary
use for these TRS phone jacks is for the addition
of external devices, such as dynamic processors or
equalizers, to mono input channels 1 and 2. This
will require a Y cord that can send (pre-fader and
pre-EQ) and receive signals to and from an external
processor. On this connection, the tip pin is for
sending the signal, whereas the ring pin is for return.
The sleeve pin, on the other hand, is the ground.
12. ALT 3-4 Output
The signal sent from these 1/4" outputs is fed
from the ALT 3-4 mixing bus, and can be used in
conjunction with a large array of devices, including
signal processors, other PA systems, recording
devices, and so on.
13. Foot Switch Jacks
These ports are for the inclusion of a foot switch,
used to remotely adjust properties of the built-in
Digital Effect processor, to the mixer. The left jack is
used to adjust the tap delay properties, whereas the
right jack is used for turning the effects on and off.
14. FireWire Connection
These two FireWire ports are for connecting the
Helix Board to any PC or Macintosh computer.
They allow all 10 audio channels to be streamed
to a computer, and the 2 audio channels of the
computer to be streamed back to the Helix Board
for monitoring purposes.
channels sent to the computer is pre- or post-fader,
depending on the pre/post setting on each input
channel. The main left and right signal (also sent
through the FireWire interface) is a pre-main fader
signal. The returned FireWire signal can be utilized
in the FireWire Return section on the face of the
mixer.
15. Power Connector
This port is for the addition of a power cable and
supply, allowing power to be supplied to the mixer.
Please use the external power supply that is
included with this mixer only as using other adaptors
could damage the mixer. For a replacement supply,
contact your nearest Phonic dealer.
HELIX BOARD 12 FIREWIRE MKII
The signal of audio
AC IN
18.8V X2
8V X1

CONTROLS AND SETTINGS

REAR PANEL
16. Power Switch
This switch is used to turn the mixer on and off.
Ensure you turn all level controls down before
activating.
17. Phantom Power Switch
When this switch is in the on position, it activates
+48V of phantom power for all microphone inputs,
allowing condenser microphones (well, the ones that
don't use batteries) to be used on these channels.
Activating Phantom Power will be accompanied by
an illuminated LED above the left channel Level
Meter. Before turning Phantom Power on, turn all
level controls to a minimum to avoid the possibility
of a ghastly popping sound from the speakers.
NB. Phantom Power should be used in conjunction with balanced
microphones. When Phantom Power is engaged, single ended
(unbalanced) microphones and instruments should not be used
on the Mic inputs. Phantom Power will not cause damage to most
dynamic microphones, however if unsure, the microphone's user
manual should be consulted.

CHANNEL CONTROLS

18. Low Cut Filter (75 Hz)
This button, located on channels
1 through to 4, will activate a
low-cut / 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.
19. Mic / Line Gain Control
This controls the sensitivity of the input signal of
the Microphone / Line input. The gain should be
adjusted to a level that allows the maximum use of
the audio, while still maintaining the quality of the
feed, based on the channel setup instructions. This
can be accomplished by adjusting it to a level that
will allow the peak indicator occasionally illuminate.
All 4 mono channels feature this control.
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