JBL MS-8, Service Manual, Page: 21 / 110

rOUBLeshOOTiNG
sOUNd
The MS-8’s Logic 7 processing
is (by design) sending all mono
information to the center
speaker.
The center speaker seems
too loud when you’re listening
to news, sports or talk radio
stations.
The sound always has too
much or too little bass or
treble.
Music is dull, lifeless and
confined-sounding, with poor
stereo imaging.
The MS-8’s Logic 7 and digital
signal processing (DSP) are
defeated.
The MS-8’s System Volume
was set at too high a level
during the acoustic-calibration
process.
Perform the acoustic-
measurement portion
of the calibration/setup
process again, with the
MS-8’s System Volume set
at –20dB. See Acoustic
Calibration , on page 32.
Use the MS-8’s Audio
Controls menu to activate
Logic 7 and DSP. See , on
page 36.
The MS-8’s Tone Controls
and/or Graphic EQ are mis-
adjusted.
Use the MS-8’s Tone
Controls and/or Graphic EQ
screens to return all controls
to their center positions. See
Audio Controls Menu , on
page 36.
Use the MS-8’s System
Levels screen to reduce the
center speaker’s level until
it sounds correct to you.
Then save the settings as
one of the MS-8’s Favorite
settings so you can recall it
whenever you listen to this
type of station. See Audio
Controls Menu , on page
36, and Favorites Menu , on
page 39.
Symptom
Possible Cause Solution
45
TROUBLESHOOTING
MS-8
20