Making Connections; Inputs And Outputs - Phonic HELIX BOARD 18 FIREWIRE MKII Manual Del Usuario

Making Connections

Inputs and Outputs

1. XLR Microphone Jacks
These jacks accept typical -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. The Helix Board 18 FireWire MKII features a total of
eight Microphone inputs.
NB. When these inputs are used with condenser microphones, the
Phantom Power should be activated. However, when Phantom Power is
engaged,single ended (unbalanced) microphones and instruments should
not be used on the Mic inputs.
2. Line Inputs
This input accepts typical 1/4" TRS (balanced) or TS (unbalanced)
inputs, for balanced or unbalanced signals. They can be used
in conjunction with a wide range of line level devices, such as
keyboards, drum machines, electric guitars, and a variety of
other electric instruments.
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3. Stereo Channels
The Helix Board 18 FireWire MKII also features
a few stereo channels, thrown in for maximum
flexibility. Each of these stereo channels features
two 1/4" phone jacks, for the addition of various line
level input devices, such as electronic keyboards,
guitars and external signal processors or mixers, as well as XLR
Microphone jacks on channels 7/8 and 9/10, allowing users to
option of using the channel as a microphone input channel. If you
wish to use a monaural device on a stereo input, simply plug the
device's 1/4" phone jack into the left (mono) input and leave the
right input bare. The signal will be duplicated to the right due to
the miracle of jack normalizing.
4. AUX Returns
These 1/4" TS inputs are for the return of audio to the Helix
Board 18 FireWire MKII mixer, processed by an external signal
processor. If really needed, they can also be used as additional
inputs. The feed from these inputs can be adjusted using the
AUX Return controls on the face of the mixer. When connecting
a monaural device to the AUX Return 1 and 2 inputs, simply plug
a 1/4" phone jack into the left (mono) input, and the signal will
appear in the right as well.
HELIX BOARD 18 FIREWIRE MKII
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5. AUX Sends
These 1/4" TRS outputs may be used to connect to an external
signal processor, or even to an amplifier and speakers (depending
on your desired settings) from the mixer. The signal from the AUX
Sends is controlled by the AUX master controls (on the face of the
mixer), which obtain their signal from the AUX controls located
on each channel strip. The Helix Board 18 FireWire MKII features
a total of  AUX Sends. When using the FireWire interface, AUX
Send 1 can be elected to receive the audio signal sent from the
Computer, for monitoring or recording purposes.
6. Phones
This stereo output port is suited for use with headphones,
allowing monitoring of the mix. The audio level of this output is
controlled using the Control Room / Phones control.
7. Record Out
These outputs will accommodate RCA cables, able to be fed to
a variety of recording devices. Also included is a mini stereo jack
for the addition of recording devices such as MD players, and
even laptop computers.
8. 2T Return
These RCA inputs are used to connect the mixer with parallel
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external devices, such as sub mixers or CD, Tape and Cassette
Players. Also included are mini stereo jacks, for receiving signals
from audio devices like portable CD, MD and MP players.
9. Main Outputs
These two 1/4" TRS balanced jacks will output the final stereo line
level signal sent from the main mixing bus. The primary purpose of
these jacks is to send the main output to external devices, which
may include power amplifiers (and in-turn, a pair of speakers),
other mixers, as well as a wide range of other possible signal
processors (Equalizers, Crossovers, etc.).
10. Group Outputs
These balanced 1/4" TRS phone jacks output the final feed from
the Group 1 and 2 mix controlled by the Group level faders.
These outputs can be used to feed a wide range of devices, such
as mixers, signal processors, and even to connect an amplifier
and speakers to be used along with the Main Speakers, for a
more rounded audio experience.
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