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Problems and solutions · Cleaning
The subwoofer is not working
If the power LED does
➒
not light up when you
switch on the power
switch, replace the
fuse . Make sure that
the replacement fuse
➑
has the same rating
as the defective fuse.
If the power LED and
the Teufel logo on the front panel are lit up (Power
Function ➊ on "On"), turn the subwoofer volume
level all the way down, unplug the subwoofer RCA
cable from the amplifier, turn up the volume
slightly and touch the tip of the RCA connector
with your finger. If this produces a hum or crackle,
the fault is with the amplifier or the amplifierset-
tings. If the subwoofer remains completely silent,
please contact our support team.
The subwoofer is making a humming noise
Hum may be caused by any connected audio de-
vice as well as by problems with the mains power.
In most cases, excessive hum is caused by one of
the following:
1. The subwoofer is connected to a different
electrical circuit than the other components.
Make sure that all connected devices are pow-
ered from the same electrical circuit, i.e., the
same mains socket.
2. The antenna connected to the audio sys-
tem or TV has a different ground potential to
the antenna socket. To test this, simply discon-
nect all the antenna cables from the wall socket.
If this makes the hum disappear, you will need a
ground breaker (available from most electronics
stores). Simply insert the ground breaker be-
tween the antenna socket and the TV/receiver.
Cleaning
Please take note of the following guidelines to
protect the components and maintain the finish
of your Teufel loudspeakers:
Avoid placing the speaker cabinets in direct sun-
light. Avoid extreme temperature fluctuations
3. A line filter (to be purchased separately)
can also be useful for hum removal. Note that
you will need to connect all your electrical de-
vices to the line filter.
4. Some types of power multiboxes are also
known to produce hum. Try eliminating your
multibox and plug the subwoofer's power cable
directly into the mains socket.
5. If possible: Unplug the mains cable, rotate
the connector plug by 180° , and plug it back
into the mains socket.
6. If you have trouble locating the source of the
hum, check whether the subwoofer is less noisy
when you plug it into the mains connection in an-
other room. Also, try disconnecting the subwoof-
er's RCA cable from the receiver to see whether
the hum is caused by one of the other connected
devices.
The subwoofer is not activating automatically
when in "Auto ON" mode
Some AV receivers default to a very quiet bass
output on the Pre Out/Sub Out. As a result, the
subwoofer fails to activate, as the weak signal
does not cross its signal detection threshold.
In order for the subwoofer to correctly acti-
vate/deactivate when in "Auto ON" mode, set
the subwoofer's own level control quite low (e.g.,
10 o'clock position) and increase the receiver's
subwoofer output level in the "Speaker Setup"
section – set it to the maximum value (+10 dB or
+12 dB) if necessary. This should resolve any issues
with the automatic signal detection. If it doesn't,
you can always run the subwoofer in the regular
"ON" mode, where it is permanently on.
and protect your loudspeakers against humidity.
When cleaning the speaker cabinets, only use dry
or moist cloths. Never use abrasive or alcohol-
based cleaning products. If you need to clean a
speaker membrane, do so very carefully using a
dry cloth.
·Motiv 6
15
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