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The actual connections you’ll make to and from the SD8 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 SD8 turned off—this
particularly applies to speaker connections. If you must make connections
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 SD8 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:
Unbalanced cables use standard 1/4" phone connectors, wired as follows:
• 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 “Grounding Techniques” section on page 16 in
this manual 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:
Connecting The SD8 - General Suggestions
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