Troubleshooting - Dynaudio SUB 250 Operating Manual

Optimizing settings/Troubleshooting
Problem
The subwoofer switches itself off
although music is being played.
The subwoofer will not switch on at all.
The subwoofer will not switch on
automatically.
Subwoofer is switched on but no sound
from the subwoofer.
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Troubleshooting

There may be various reasons why the subwoofer doesn't function properly in a
system without it being faulty. The checklist below will help solve problems you may
encounter. Before consulting your Dynaudio dealer, check this list first.
Check this first:
Check if all signal cables are connected properly.
Check settings in bass management menu of the connected processor/receiver
Carefully and gradually increase the subwoofer volume level on the processor/
receiver
Carefully and gradually increase the subwoofer volume level on the subwoofer
GAIN control.
Cause
There is hardly any low-frequency signal available. This
can happen if the music or movie itself does not contain
very low frequencies (e.g. long dialogues).
AC mains cable has become disconnected
(LED does not lit)
Mains switch on the rear is switched to OFF
(LED does not lit)
No signal is present on either of the subwoofer's inputs
(LED lights red).
No signal is present on either of the subwoofer's inputs.
In the processor or receiver's bass-management set-up,
subwoofer has been disabled.
Subwoofer volume level has been turned down all the
way on the processor/receiver.
Subwoofer volume level has been turned down all the
way with the subwoofer's control.
Solution
The subwoofer will switch on automatically as
soon as low frequent signals are detected.
Make sure to switch the system off first before
making any changes!
Reconnect mains cable.
Switch mains back on.
Check if all signal cables are connected properly.
Make sure to switch the system off first before
making any changes!
Check if all signal cables are connected properly.
Check if the subwoofer output on the source is
engaged.
Make sure to switch the system off first before
making any changes!
Check if all signal cables are connected properly.
Check settings in Bass Management menu of the
connected amplifier or receiver.
Carefully and gradually increase the subwoofer
volume level on the amplifier or receiver.
Carefully and gradually increase the subwoofer
volume level on the subwoofer GAIN control.
Dynaudio SUB 250