Troubleshooting and diagnosis
Sound (continued)
Issue
Possible causes
Inspection procedure / Diagnosis
Noise
Level loss
Distorted sound
White noise
(and no error message)
AES/EBU audio source
connected to an
ANALOG input
Check the input signal cabling and check that
the input mode has been selected accordingly
in the INPUT SETTINGS menu.
gain value too high on
the controller
Set an appropriate gain value on channels
OUT1 to OUT4.
If the AES/EBU input mode is selected, set an
appropriate AES/EBU input gain value.
output gain value too
high on the audio source
Set an appropriate output gain value on the
audio source (refer to the
third party
documentation
).
switch to the analog
fallback mode with
wrong AES/EBU input
gain value
Set an appropriate AES/EBU input gain value
and inspect the digital audio source for failure.
Reminder: A
digital
audio source can meet the
following failures: no clock, loss of lock, CRC
error, bipolar encoding error, data slip.
A validity bit at non-audio value will
not
trigger
the automatic fallback. Instead the signal will be
muted.
wrong preset selection
Select a preset in accordance with the
loudspeaker system connected to the outputs.
audio source cable
incorrectly plugged
Unplug the XLR cable and plug it again on the
audio source and the controller.
Verify with your installer if ground loops can
occur.
audio source cable
damaged
Replace the XLR cable.
wrong settings on the
audio source
Set appropriate parameter values on the audio
source (refer to the
third party
documentation
).
audio source failure
Inspect the audio source for failure.
loudspeaker plugged
into the wrong output
connector
Plug and secure each SpeakON cable into the
loudspeaker and the corresponding output
connector on the controller.
loudspeaker cable
incorrectly plugged
Unplug the SpeakON cable and plug it again
on the audio source and the controller.
Verify with your installer if ground loops can
occur.
loudspeaker cable
damaged
Replace the SpeakON cable.
loudspeaker damaged
If only one loudspeaker is connected,
inspect it.
Otherwise,
go to next step.
other causes
Contact L-Acoustics
®
.
Sound only available in
AES/EBU and not in
analog
or
Sound only available in
analog
and
not
in
AES/EBU
any
Contact L-Acoustics
®
.
