LA8_UM_ML_1.1
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41 en
EN
8.3.2
Pour sound quality
8.3.3
Overheating
Overheating
Controller getting
enough cool air?
Clean or replace filter
(see section 8.2)
See section 6.2 for
information on how to
achieve cooling of the
controller
Contact local distributor for
service
Filter clogged?
Controller
operating within
rated impedance?
Check that nothing causes a
short circuit at the
controller's outputs, e.g
faulty cabling or a speaker
component short circuit in
the voice coil.
Check that the number of
enclosures wired in parallel
to the same controller
output is not too high.
No
No
No
Yes
Yes
Yes
Pour sound
quality
Hum or
Buzz?
Check signal XLR cables and
connections on both sides
Contact local distributor
for service
Controller’s
input channels
clipping? **
Lower input signal
source level
Speaker
cables correctly
wired? ***
Check speakers cabling
Speakers
operating
normally?
Check speaker and speaker
cables for fault
Yes
No
No
Yes
Yes
Yes
No
No
* Press and hold either OUT1-4 / INA / INB tabs to check
the corresponding output and input gain values (see
section 7.1.2).
** Press and hold either IN A or IN B tabs to check the
corresponding input signal levels (see section 7.5.3).
*** For example, check if LF and HF connections have not
been inverted when cabling an active enclosure.
Yes
No
Set output and/or input gain
lower values *
Controller’s
output channels
clipping?
Check source signal
Source
signal clear
and
undistorted?
Yes
No
