S 38 STUDIO SERIES (serv.man3) - JBL Audio User Guide / Operation Manual. Page 6

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T R O U B L E S H O O T I N G
5
If there is no sound from 
any of the speakers:
• Check that receiver/
amplifier is on and that a
source is playing.
• Review proper operation
of your receiver/amplifier.
If there is no sound
coming from one speaker:
• Check the “Balance”
control on your
receiver/amplifier.
• Check all wires and
connections between
receiver/amplifier 
and speakers.
• Make sure all wires are 
connected. Make sure
none of the speaker wires
are frayed, cut or
punctured.
If the system plays at low
volumes but shuts off as
volume is increased:
• Check all wires and
connections between
receiver/amplifier 
and speakers.
• Make sure all wires are
connected. Make sure
none of the speaker 
wires are frayed, cut or
punctured.
• If more than one pair of
main speakers is being
used, check the minimum
impedance requirements
of your receiver/amplifier.
If there is no (or low) bass
output:
• Make sure the polarities 
(+ and –) of the left and
right “Speaker Inputs” are 
connected properly.
If there is no sound from 
the center speaker:
• Make sure that your
receiver’s “Center-
Channel” mode is in the
”Normal“ or ”Wide“
position. If it is in the
”Phantom“ position, the
center speaker will not
play.
• Check all connections
between processor/
amplifier and the center
speaker.
Studio Series-S26,38,310,312 OM  8/10/99  4:20 PM  Page 5
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