Adjusting Settings; Tips And Tricks - HK Audio ACTOR AT 112 A Manual De Instrucciones

ACTOR Manual 2.2

6 Adjusting Settings

If you encounter distortion or overdriven signals,
check the signal sources and, if possible, turn down
the output signal at those source devices. If the le-
vel of the signal routed to the ACTOR system cannot
be reduced in this way, use the Gain knobs to adjust
the level to the power amps (see Tips and Tricks).
If you encounter low-frequency hum, activate the
Ground Lift switches of the individual components.
If this fails to take care of the problem, inspect the
cables for damage and all of the signals that you
have routed into the mixer to localize the problem
(see Tips and Tricks).

7 Tips and Tricks

1. Do not expose electronic circuitry to moisture!
When you set the system up outdoors, be sure to
protect it against rain. Keep soft drinks, beer or any
other liquids well away from the cabinets to protect
their electronic components. Liquids can kill
electronics.
2. To assure proper ventilation, make sure that
cabinets are placed a sufficient distance away from
walls and aren't covered by curtains and the like.
This is crucial to prevent the power amps from
overheating.
3. ACTOR provides optimum sound, so you should
provide it with optimum input signals! Hum is ge-
nerally caused by defective cables, the wrong type of
cords or unbalanced signals routed into the mixing
console. Check all signal and mains cables, use DI
boxes to balance unbalanced signals, and do
everything you can to keep on-stage noise to a
minimum.
4. Prevent distortion! Not only is it unpleasant to
the ears of your audience, it can also cause costly
damage to your equipment. Ensure that all compo-
nents connected directly and indirectly to the
ACTOR system have sufficient power ratings and
will never generate distortion because they're being
operated at their respective limits. Provide a strong
and clean signal to the system that doesn't have to
be cleaned up by backing off the Gain knob.
5. Avoid ground loops! In spite of a balanced signal
circuit, redundant ground circuits in a single audio
system may generate annoying hum. For example,
you may encounter a ground loop when the mixer is
grounded via a mains cord which isn't connected to
the same mains circuit as the ACTOR system. To
prevent this problem, always be sure to connect the
cabinets (or more accurately, their power amps) and
the mixing console to the same electrical circuit to
ensure the same phase! If your equipment hums
despite this precaution, the Ground Lift switch can
be of help. CAUTION: Never use electrician's tape
or anything similar to cover the ground contact of
the plug-this endangers lives!