Harman Kardon CHAMPAGNE - Page 13

Page 13
Are the speaker
system mode settings
optimized?
Set each of the three
knobs (treble, Sub
level, surround) on top
of the subwoofer back
the their center/
nominal positions.
Too much bass or
treble.
Bass/Treble level is
set too high
Turn Bass/Treble
down or return their
settings to the center
position.
Subwoofer emits a
loud hum or buzzing
noise.
Input cables not
plugged in properly
Check input cable
connection
Speaker system emits
a loud hum or buzzing
noise when used with
a stereo only (not
multichannel)
soundcard.
The redundant rear
(black) audio
connector is not
protected by the
rubber cover and is
touching the computer
case.
Replace the rubber
cover or otherwise
insulate the rear audio
connector so it cannot
contact any metallic
surfaces.
Wrap up excess input
cable in order to make
as short as possible
Speaker system
experiences radio
frequency interference
or picks up a radio
station
Input cable may be
picking up
interference
Purchase a ferrite
clamp and attach over
input cable. A clamp
can be purchased at
your local electronics
store