Settings; Tips And Tricks; Troubleshooting - HK Audio PREMIUM PR:O Serie Manual Del Usuario

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After you power the system up by engaging
the Power switch, a system check prompts
the fan to briefly kick on and back off again in
about five seconds. The fan is temperature-
controlled, actuating only at very high volumes
and temperatures requiring cooling.
• The Power LED lights up green when the
cabinet receives mains power.
Set the Gain Line In knob to the center or 12
o'clock position (= 0 dBV). This is the preferred
level if you have connected a mixer to the
PREMIUM PR:O active cabinet. You can boost
the input level 6 dB by turning up the Gain
knob.
For the best audio results, ensure the Limiter
LED (red) does not light up continuously.

2.4 Settings

Adjusting volume with the Gain knob
Twist this knob to adjust microphone and line
signal levels.
CAUTION: Never tape over the plug's ground
terminal – this endangers lives!
If you hear distortion or saturated signals,
first check the signal sources and, if possible,
reduce the output signal level there. If you
cannot adjust the level of the signal routed
to the PREMIUM PR:O active cabinet at the
source, match it to the power amps by backing
off the Gain knob to lower the input level.
PREMIUM PR:O active System Configurations
active, stereo
active/passive, mono
2 x PR:O 8 A or
PR:O 8 A + PR:O 8 or
2 x PR:O 10 XA or
PR:O 10 XA + PR:O 10 XA or
2 x PR:O 12 A or
PR:O 12 A + PR:O 12 or
2 x PR:O 15 A or
PR:O 15 A + PR:O 15 or
2 x PR:O 15 XA
PR:O 15 XA + PR:O 15 X

3 Tips and Tricks

1 Do not expose electronic circuitry to
moisture! Protect cabinets against rain when
you set them up outdoors. Keep soft drinks,
beer, and any other liquids away from the
electronic components to prevent short
circuits.
2 PREMIUM PR:O active enclosures provide
optimum sound to you, so be sure to provide
optimum input signals to them! Noise
such as humming is generally caused by
defective cables, the wrong type of cords,
or unbalanced signals routed into the mixing
console. Check all signal and mains cables.
3 Prevent distortion! Not only is it unpleasant
to your audience's ears, it also endangers
your equipment. Make sure all components
that are connected directly and indirectly
to PREMIUM PR:O active cabinets have
sufficient power ratings, and that they don't
distort because they're running at their
respective limits. Ensure all sources deliver
clean audio signals.
4 Avoid ground loops! Annoying humming
can arise even within audio systems with
balanced circuits, for example, when the
mixing console's mains cord isn't connected
and grounded to the same mains circuit as
PREMIUM PR:O active enclosures. Using
two different ground circuits can create a
ground loop. To prevent this problem, always
connect PREMIUM PR:O active enclosures
and the mixing console to the same electrical
circuit; that is, the same phase!
CAUTION: Never tape over the plug's ground
terminal - this endangers lives!
Monitoring
Systems
PR:O 10 XA + PR:O 10 X
2 x PR:O 8 A or
or
2 x PR:O 10 XA or
PR:O 12 MA + PR:O 12 M
2 x PR:O 12 A or
2 x PR:O 15 A
+ 2 x PR:O 18/210 Sub A
Premium Pr:o Active

4 Troubleshooting

The POWER LED does not light up when
switched on.
• Check if the mains cord is plugged into the
Mains Input.
• Check if the mains power supply is providing
current.
The Power LED lights up red, flashing
intermittently.
• The Limiter has actuated; lower the input
level if necessary.
The Power LED lights up red continuously,
but no sound is issuing from the cabinet.
• The enclosure's protective circuit has tripped.
Please contact your authorized dealer.
The rendered music sounds distorted.
• Check your mixing console's LED meters.
They should not be constantly in the red. If
necessary, back off the volume at the mixer.
• If the LED displays on your mixer are in the
green, back off the PREMIUM PR:O active
cabinet's Gain knob.
• Observe the Limiter LEDs on the PREMIUM
PR:O active enclosure's control panel. These
may light up red, but only intermittently. The
red light may not illuminate continuously. If it
does, turn down the Gain knob
4 x PR:O 8 A
+ 2 x PR:O 210 Sub A
4 x PR:O 8 A
+ 2 x PR:O 18 Sub A
1.6
11

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