5 Troubleshooting Guide
28
Balance is off; sound is
lopsided
Won't image left or right
Won't image between the
loudspeakers
Can't hear loudspeakers on
opposite side from listener
Surround sound is weak or
missing
Left or Right signals come
from the surround
loudspeakers
Check the program source for channel balance. This symptom
is usually caused by an unbalance in the source. Compare with
Mono source material. Make sure the amplifier gains are set
correctly with the setup procedure.
Verify the polarities of the loudspeakers. This is done with the
setup procedure. You should be able to hear solid phantom
imaging at left-center and right-center.
There may be a problem with the signal source. Try different
program material, and make sure it has good left-right balance.
Also check the loudspeaker placement. Try pointing the left and
right loudspeakers inward more for improved coverage of the
listening area.
Check the setup and placement of the loudspeakers as
described previously.
Best in-between imaging performance requires good matching
between the loudspeakers and smooth, wide dispersion.
Optimize the loudspeaker placement for even coverage. If the
center loudspeaker does not match, it will be helpful to use an
equalizer for the center channel; adjust it for the best possible
frequency response match with the side loudspeakers.
This can be caused by poor loudspeaker placement or
inadequate dispersion (coverage) of the side loudspeakers. Try
angling the side loudspeakers inward more for better coverage
of the opposite side.
Be sure you have a stereo source; there will be no surround
signal with a mono source.
A source signal with low separation will have a weak surround
component. This can be solved by setting the C/S Image
Balance control toward Sides. Or, simply increase the setting of
the Surround control.
To some extent this is normal. If it is distracting then the
surround level may be too high or the C/S Image Balance is set
too wide.
To verify the distinction of left or right from surround, with a
given C/S Image Balance and Surround level setting, turn off or
disconnect one channel, e.g. left connection only, of the input
signal. The surround loudspeakers should be audible, but the
right loudspeaker should dominate throughout most of the
listening area. The same is true for the left loudspeaker with the
right input disconnected. If the surround loudspeakers compete
or dominate the localization, then the overall surround level
should be turned down.
