Sirus Live M416, Manual

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7.2. Required connection cables
The mixing console uses professional grade 3 pin XLR and ¼'' TRS (3 pole) jack sockets. To ensure
best performance, we recommend that you use high quality audio cables and connectors, and take
time to check reliable and accurate cable assembly. It is well known that most audio system problems
are due to faulty or sub standard interconnecting leads. The following plugs may be used to connect
audio to the console:
Avoid rev and – on balanced connections as this will result in reserved polarity (out of phase)
signals which may cause signal cancellation effects.
Where long cables runs are required, balanced interconnections should be used. However, line level
interconnections between more affordable 2-wire (signal, ground) unbalanced equipment and the
console unlikely to cause the problems if the cables are kept shorter than 10 meters or so. Refer to the
wiring diagrams in chapter 7.
7.3. Dealing with ground loops, buzz and interference
For optimum performance all audio signals should be referenced to a solid, noise-free ground (earth)
point, frequently referred to as the “star point” or “clean earth”.
A ground loop is created when potential differences exist between grounds at different points in the
system, and the signal has more than one path to the ground. In most cases ground loops do not
result in audible problems. Should you experience hum or buzz caused by a ground loop, check first
that each piece of equipment in accordance with the instruction manuals.
Important: For operator safety, do not remove the ground (earth) connection in the power
lead of the console or connected equipment.
To avoid interference pickup keep audio cables away from mains power units and cables, lighting
cables, dimmer units, computer equipment and mobile phones. Where this cannot be avoided, cross
the cables at right angles to minimize interference.