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Troubleshooting
The following instructions should help you to solve problems. If this doesn't work, please contact our hotline (see page 3).
Mind the warranty instructions.
Problem
The subwoofer doesn't
work, the power LED 14 or
the display panel are not
illuminated.
The subwoofer is not work-
ing, but the display panel
is on.
The subwoofer hums.
Playback is noisy.
The sound seems dull.
Possible cause
The subwoofer is switched off or doesn't
have any power.
Fuse is defective.
The volume has been set too low.
The subwoofer is connected to another
circuit than the rest of the system.
The buzzing is caused by problems with
the power supply.
The buzzing is caused by a multi-way
socket.
Generally speaking, the system has a very
low noise level. In the high range area,
very good-quality high-resolution speaker
systems can expose the poor quality of a
signal source (e.g. from MP3 fi les).
Satellite has been connected with incorrect
polarity.
Solution
Turn on the switch 11 ("On I").
Check the mains cord and socket.
Replace the fuse: Discon-
nect the mains cord.
Carefully pull out the fuse
holder 12 on the mains
connection jack 10.
Push out the old fuse to
the bottom. If necessary,
insert a new fuse (5 A
delay-action), close the
holder.
Increase the volume with the button 21 and/
or 29 "+".
Connect the subwoofer and source device to
the same electric circuit.
Buy a line fi lter and connect both devices to
it.
Use another multi-way socket or plug the
subwoofer directly into the wall socket. In the
case of two-pin plugs it may help to insert the
plug into the socket the other way around.
Ensure that the source is sending a clean
signal.
Make sure the speaker cables of all satellites
are connected properly.
To conduct a test, turn the switch 1 "Phase"
on and off. Select the setting with the best
sound.
• Columa 300 R
19
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