Connecting The S83/S63 - General Suggestions
The actual connections you’ll make to and from the S83/S63 will vary according to the environment you use it in and the particular equipment you have. However, here are a few basic rules concerning connections that will apply in pretty much all situations:
•In general, it’s best to make all connections with the S83/S63 turned off— this particularly applies to speaker connections. If you must make connec- tions with the power on, make sure that the Main Level control is completely down (turn the knob fully counterclockwise). Before powering down, turn the Main Level control completely down.
•When using line inputs, try to use balanced connectors and cabling wherever possible. These kind of connections do a better job of rejecting extraneous noise and hum and generally provide a cleaner signal. If your equipment doesn’t provide balanced outputs, however, not to worry: All S83/S63 channel line inputs will accept either balanced or unbalanced connectors. The diagram below shows how balanced 1/4” TRS (Tip/Ring/Sleeve) connectors should be wired:
SLEEVE
TIP
RING
TIP +
GROUND RING -
Unbalanced cables use standard 1/4” phone connectors, wired as follows:
| + SIGNAL |
+ SIGNAL |
|
GROUND | GROUND |
•Make one connection at a time and then monitor the incoming signal. If you hear a distinct hum or buzz, you may have a grounding problem with that particular device. See the section in this manual entitled “Grounding Techniques” for information on how to avoid grounding problems.
•NEVER connect a microphone and line level input to the same channel simultaneously— use one or the other. You can have some channels connected to microphones and others to line level signals (for example, you might want to plug mics into channels 1 - 4 and line level signals into the remaining channels)— just don’t have both kinds of inputs connected to the same channel. The diagram below shows how your mic connectors should be wired:
3 - SIGNAL
1 GROUND 
TO MIXER 2 + SIGNAL
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