Problem
Possible causes
True Wireless mode
1. You waited for less than 20 seconds between
switching off the first and switching off the second
After switching them off,
911 Speaker.
the two 911 Speakers
2. Two source devices are connected with one of the
are not connecting with
911 Speakers.
each other.
3. The distance between the two 911 Speakers
is too great. Here, too, the maximum distance is
10 metres.
4.1. You have cancelled the True Wireless mode
on one of the 911 Speakers via the Bluetooth
and Mute buttons.
4.2. At least one of the two 911 Speakers is already
connected with another [ third ] 911 Speaker via
True Wireless.
5. You selected the AUX input on both 911 Speakers.
Solution
1. Always wait for 20 seconds between switching off the first and
switching off the second 911 Speaker.
2. Remove the connection with at least one of the two source
devices.
3. Reduce the distance between the two 911 Speakers.
4. Reconnect the two
®
911 Speakers with each other as explained in the instructions.
5. Select the Bluetooth
®
input on at least one of the 911 Speakers.
Problem
Possible causes
The AUX input cannot be
This 911 Speaker is connected via True Wireless with
selected.
a second 911 Speaker, for which the AUX input has
already been selected.
The 911 Speaker
1. The battery is fully discharged.
will switch itself off
2. The 911 Speaker was switched off by its automatic
automatically.
cut-off function [ battery operation: 5 minutes, mains
operation: 1 hour ].
3. The 911 Speaker's protective circuit detected a
defect.
The battery in the 911
1. The plug-in power supply is connected neither with
Speaker cannot be
the mains nor with the 911 Speaker.
charged.
2. You are trying to charge the battery using the
911 Speaker's USB port.
3. The ambient temperature is lower than 0 °C or
higher than 35 °C
4. You are not using the original plug-in power supply.
5. The integrated battery is defective.
6. The plug-in power supply is defective.
[ EN ] The 911 Speaker
Solution
Only select the AUX input on the 911 Speaker you want to connect
the source device with. The Bluetooth
®
input must be selected on
the second 911 Speaker. Alternatively, you can remove the
True Wireless mode as explained in the instructions.
1. Charge the battery.
2. Have the 911 Speaker emit an audio signal and set the
911 Speaker to mute in order to stop it switching itself off.
3. Make sure that you only operate the 911 Speaker within the
specified temperature range and that you do not overload it.
1. Make sure that the plug-in power supply is connected with the
911 Speaker and with the mains.
2. The USB port on the 911 Speaker cannot be used to charge
the battery. It is to be used exclusively by the manufacturer for
service purposes.
3. The 911 Speaker may only be charged in temperate conditions
[ see safety instructions, page 7 ].
4. Please use only the original plug-in power supply.
If you have lost it, please contact our service hotline.
5. Please contact our service hotline.
6. Please contact our service hotline.
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