LA4_UM_ML_1.1
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41 en
EN
8.3.2
Bad sound
8.3.3
Overheating
Overheating
Is
the 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
Refer controller to local
distributor for service
Is the filter
clogged?
Is the
Controller
operating within
its 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
Bad sound
Is there a
Hum or Buzz
sound?
Check signal source
Check signal XLR cables and
connections on both sides
Refer controller to local
distributor for service
Is
source signal
clear and
undistorted?
Is the input of
the controller
clipping?
Lower input signal
source level or bring
down input gain
Are speaker
Cables correctly
wired? *
Check speakers cabling
Are
speakers
operating
normally?
Check speaker for fault
* For example, check if LF and HF connections have not been inverted
when cabling an active enclosure.
Yes
No
Yes
No
No
Yes
Yes
Yes
No
No
