MEDIA SYSTEM 3000 - JBL Audio User Guide / Operation Manual. Page 14

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-14-
If there is no sound from any
of the speakers:
• Make sure the subwoofer is
plugged into an active AC
wall outlet.
• Make sure the Master Power
Switch, located on the rear of
the subwoofer, is in the
On/Standby position.
• Make sure there is a source –
for example, a DVD Player,  or
DVD equipped computer –
hooked up to one of the four
input jacks.
• Make sure that the program
material is playing.
• Recheck the hookup
connections, referring to the
Speaker Connections section.
If there is no sound from the
surround speakers or 
sound is very low:
• Check all connections
between processor/amplifier
and each of the speakers.
• Raise the surround volume
from the remote control (see
Operation section).
• Make sure the movie you are
watching or the software you
are using are recorded in
Dolby Digital or Pro Logic
Surround. If it is not, try the
Phantom or Simulated
Surround mode.
• Increase the surround-
speakers’ level, using the
level-adjustment instructions
found earlier in this manual. 
If there is no sound from the
center speaker:
• Make sure that the processor
is in the Surround or 
3-Stereo mode. If it is in
Phantom or Stereo mode, the
center speaker will not play.
• Increase the level of the
center channel, using the
level-adjustment instructions
earlier in this manual.
• Check the connections
between the subwoofer and
the center speaker.
If you have low bass output:
• Experiment with placement
of the subwoofer. Remember,
place the subwoofer in a 
corner to get maximum bass
output from the system.
• Increase the subwoofer level,
using the level-adjustment
instructions found earlier in
this manual.
• Increase the level of bass,
using the remote control.
Troubleshooting
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