Settings; Subwoofer Level; Ground Lift Button; Tips And Tricks - HK Audio L.U.C.A.S 2000 Manual De Instrucciones

L.U.C.A.S 2000 Manual 1.0

5 Settings

Left and Right Gain Knobs. If you hear distortion or
a saturated signal, first check the signal sources
and, if possible, reduce the output signal level at the
source. Also check the limiter displays. If these light
up continuously, back off the volume! If you are
unable to turn down the level that you are sending
to L.U.C.A.S 2000 at the signal source, adjust the
input gain using the Gain knobs. (Also see Tips and
Tricks.)
Subwoofer Level. When the Gain knob is set to the
center position, the subwoofer's volume is matched
to the satellites' levels so that the audience is
treated to a good balance of sound with an even
distribution of bass and mid/high (satellite) signals.
By simply turning the Subwoofer Level knob to the
left or right you can cut the bass frequencies by as
much as -12 dB or boost them by as much as +6 dB.
Ground Lift Button. If you encounter low frequency
hum, activate the Ground Lift button. If this doesn't
kill the hum, check all cords connected to the
L.U.C.A.S 2000 system and all signals routed to the
mixer until you pinpoint the problem. (Also see Tips
and Tricks.)

6 Tips and Tricks

1. Never 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 from short circuits.
2. To ensure proper ventilation, make sure the sub-
woofer is placed a sufficient distance away from
walls and isn't covered by curtains and the like. This
is crucial to keep the power amps cool.
3. Prevent distortion! Not only is it unpleasant to
the ears of your audience, it can also endanger your
equipment. Make sure all components that are
connected directly and indirectly to the L.U.C.A.S
2000 system have sufficient power, and that they
are not distorted due to being driven at their
respective limits. Provide an undistorted signal to
the system that doesn't have to be cleaned up by
backing off the Gain knob.
4. Avoid ground loops! Even in a balanced circuit,
redundant ground circuits in a single audio system
may generate undesirable hum. For example, you
may encounter a ground loop if the mixer is
grounded via a mains cord that isn't connected to
the same mains circuit as the L.U.C.A.S 2000
system. To prevent this problem, always connect
L.U.C.A.S 2000 and the mixing console to the same
electrical power circuit to ensure the same phase! If
your equipment hums despite this precaution, the
Ground Lift button may help.
Caution: Never tape over the plug's ground terminal
- this endangers lives!