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Technical Information/Warranty
18 Dynaudio Sub 250
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:
X Check if all signal cables are connected properly.
X Check settings in bass management menu of the connected processor/receiver.
X Carefully and gradually increase the subwoofer volume level on the processor/
receiver.
X Carefully and gradually increase the subwoofer volume level on the subwoofer
GAIN control.
Technical Information/Warranty Care and Maintenance
Components of the highest quality are used in your Sub 250. This assures years of
trouble free operation. Following precautions should still be made though.
Problem Cause Solution
The subwoofer switches itself off
although music is being played.
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).
X The subwoofer will switch on automatically as
soon as low frequent signals are detected.
The subwoofer will not switch on at all. • AC mains cable has become disconnected
(LED does not lit).
• Mains switch on the rear is switched to OFF
(LED does not lit).
Make sure to switch the system off first
before making any changes!
X Reconnect mains cable.
X Switch mains back on.
X Check if all signal cables are connected properly.
The subwoofer will not switch on
automatically.
• No signal is present on either of the subwoofer’s inputs
(LED lights red).
Make sure to switch the system off first
before making any changes!
X Check if all signal cables are connected properly.
X Check if the subwoofer output on the source is
engaged.
Subwoofer is switched on but no sound
from the subwoofer.
• 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.
Make sure to switch the system off first
before making any changes!
X Check if all signal cables are connected properly.
X Check settings in Bass Management menu of the
connected amplifier or receiver.
X Carefully and gradually increase the subwoofer
volume level on the amplifier or receiver.
X Carefully and gradually increase the subwoofer
volume level on the subwoofer GAIN control.