Technical information
10 October 25, 2001 AM257817_00_V.pdf
Reference Information
Troubleshooting
If you are experiencing problems with your 701
®
speakers:
1. Turn off the amplifier or receiver and check all the connections between the speakers,
amplifier, or receiver.
2. Check your amplifier or receiver owner’s guide, since other components may be the
cause of the problem.
3. Use the chart below as troubleshooting guidelines. If this does not solve the problem,
contact your authorized Bose
®
dealer to arrange for service. Refer to the enclosed list for
correct phone numbers.
Problem Possible cause How to find out Solution
One speaker
doesn’t play or
sounds distorted
Defective amplifier
or receiver channel,
or defective speaker
Switch the LEFT
and RIGHT input
connections on the
back of your left
main speaker.
If the previously
“broken” speaker
now plays properly,
and the other one
does not, one chan-
nel in the amplifier
or receiver is proba-
bly defective. If the
original speaker still
does not play prop-
erly, call Bose or
your retailer to
arrange for service.
Both speakers do
not play, or sound
distorted
Defective amplifier
or receiver
Disconnect the
amplifier or receiver
from the speakers.
Reconnect the
speakers to another
amplifier or receiver
that is working
properly.
High sound volume
drops suddenly
The automatic pro-
tection circuit has
activated to protect
the speakers from
electrical stress or
overload
Lower the volume. If
it returns to normal,
your speakers’
automatic protec-
tion circuit caused
the sudden drop.
This volume reduc-
tion protects the
speakers from elec-
tronic stress and
overload.
Return the volume
to a reasonable level
and avoid extremely
high volume set-
tings.
No bass Left main speaker is
not plugged in or
the power switch is
not turned on
Check all connec-
tions – especially
AC power.
Be sure all connec-
tions are made and
the amplifier/
receiver is on.
Weak bass Subwoofer/LFE
level or bass level
set too low
Check knob posi-
tions on the left
main speaker.
Check receiver set-
tings.
Adjust knob posi-
tions to desired set-
ting.
Distorted sound or
diminished sound
quality
Out-of-phase wiring Check connections.
They should be in
phase (+ to + and
– to –).
Adjust connections,
if they are out of
phase.