7
• HiFi column speakers Defi nion 3
Cleaning & Maintenance
NOTICE
Using the wrong cleaning agents may dam-
age the speakers.
–
Do not use caustic cleaning products,
white spirit, thinners, petrol or similar
under any circumstances. Such cleaning
agents may damage the surface of the
housing.
• Ideally, you should remove dust or small amounts of
dirt with a dry, smooth leather cloth.
• Rub off stubborn dirt with a damp cloth. Make sure
that no liquid penetrates the speakers.
• Then immediately wipe the surfaces dry with a soft
cloth without applying pressure.
Troubleshooting
The following advice should help you to solve problems. If this does not help, you will find useful information in
the detailed FAQs on our website. Otherwise, please contact our hotline (see page 2). Take note of the warranty
instructions.
Problem
Possible cause
Solution
Playback is noisy.
Basically, the speakers do not produce
an inherent noise and can expose the
poor quality of a signal source (e.g. from
MP3 files).
Make sure that the source is emitting a
clear signal.
The sound seems dull.
Speakers have been connected with
incorrect polarity.
Check to make sure the cables of all
speakers are correctly connected.
CAUTION
Extended listening at high volumes
may lead to hearing loss.
–
To avoid damage to health, avoid extended
listening at high volumes.
–
When the volume is set high, always keep
a certain distance from the device and
never place your ear directly on the speaker.
–
If a speaker is set to full volume, this may
produce very high sound pressure. This
may have psychological consequences
and also cause physical injury. Children
and pets are particularly at risk. Set your
signal source device volume control to a
low setting before turning on the power.
