Poor Sound Quality; Overheating - L-Acoustics LA8 Manuel Utilisateur

8.3.2

Poor sound quality

Pour sound
quality
Controller's Yes
output channels
clipping?
No
Controller's
Yes
input channels
clipping? **
No
Yes
Hum or
Buzz?
No
Speaker
No
cables correctly
wired? ***
Yes
Speakers
No
operating
normally?
Yes
Source
signal clear
No
and
undistorted?
Yes
Contact local distributor
for service
* Press and hold either OUT 1-4 / IN A / IN B keys to
check the corresponding output and input gain values
(see section 7.1.2).
** Press and hold either IN A or IN B keys 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.
LA8_UM_ML_1.2
Set output and/or input gain
lower values *
Lower input signal
source level
Check signal XLR cables and
connections on both sides
Check speakers cabling
Check speaker and speaker
cables for fault
Check source signal
w w w . l - a c o u s t i c s . c o m
8.3.3

Overheating

Overheating
Yes
Filter clogged?
No
No
Controller getting
enough cool air?
Yes
Controller
No
operating within
rated impedance?
Yes
Contact local distributor for
service
EN
Clean or replace filter
(see section 8.2)
See section 6.2 for
information on how to
achieve cooling of the
controller
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.
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