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English
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English
Problem Possible cause Solution
The speaker connected
to the Amp 5�1
is buzzing�
1� The signal cable from the source device to the
analoque input [AUX] of the Amp 5�1 is too long�
1� Use a shorter and/or higher quality (better shielded) signal
cable�
2� Used signal cable not shielded or the shield on
the cable used is interrupted (defective)�
2� Replace the cable with a shielded and/or higher quality cable�
3� Ground loop (hum loop) “generated”�
A ground loop can occur if at least two
interconnected devices with safety plugs
(e�g� amplifier and computer) are connected to
locally separated power outlets�
3� Connect all devices connected to the Amp 5�1
with a safety plug to a single power strip (multiple socket)�
4� You are operating a non-interference suppressed
consumer (e�g� fridge) at the mains�
4�1 For testing purposes, turn off any possible sources of inter-
ference; have the relevant device suppressed for interference if
the humming sound disappears, or initially connect the source
of interference to another mains phase (L1, L2 or L3) (consult a
specialist, if necessary)�
4�2 Insert a special “sheath current filter” (available from spe-
cialist retailers) between the sound source and the Amp 5�1 to
eliminate the humming�
4�3 Turn the power plug round to reduce the so-called hum vol-
tage (particularly important if the source device is not earthed)�
The Amp 5�1
unintentionally
switches to the input
[BT]�
1� The function BT Select [BTS] is activated and
your (mobile) device plays system sounds, such as
typing on the keyboard�
1� Deactivate the function BT Select [BTS] and set it back on
Manual [MAN]�
2� Disable all system sounds on your (mobile) device�
The Amp 5�1
unintentionally switches
on�
1� This can happen when your (mobile) device is
playing system sounds such as when typing on the
keyboard, a digital source is turned on, or an
analogue source is playing�
1� Change the standby function from Auto [AUT] to ECO, NSB or
MAN�
Problem Possible cause Solution
The input [BT] cannot
be selected via the “In-
put” buttons
" " or " "
�
1�
The function BT Select [BTS] is activated and the
Amp 5�1 switches the source automatically as soon as
a signal from your (mobile) device is received�
1�
Deactivate the function BT Select [BTS] in order to select the
input [BT] manually�
The Amp 5�1 does not
automatically switch to
the input [BT]�
1�
The function BT Select [BTS] is deactivated
(Manual / [MAN])�
1�
Activate the function BT Select [BTS]�
2�
Bluetooth
®
is disabled on your (mobile) device�
2�
Activate Bluetooth
®
technology on your (mobile) device�
3�
The Amp 5�1 is connected to
another (mobile) device�
3�
Disable Bluetooth
®
wireless technology on the other (mobile)
device
�
4�
The (mobile) device is not paired to the
Amp 5�1�
4�
Pair your (mobile) device with the Amp 5�1
�
No playback or inter-
rupted playback via
Bluetooth
®
wireless
technology
1�
There is no connection between the Amp 5�1 and
the (mobile) device�
1� Pair and c
onnect your (mobile) device with the Amp 5�1 as descri-
bed in this manual�
2�
The (mobile) device is paired,
but it does not play�
2�1
The (mobile) device needs to be reconnected�
2�2 Increase
the volume at the (mobile) device (to the
maximum possible value)�
2�3
Increase the volume of the Amp 5�1�
2�4
Make sure that sources of interference, such as a
WiFi Router or a laptop, are not placed in close proximity
to the Amp 5�1�
2�5
Simultaneous operation via WiFi and Bluetooth
®
connection from a (mobile) device is not possible
without interference in some cases; therefore, disable
WiFi on the (mobile) device�
3�
You are out of reach of the Amp 5�1� The maximal
distance is approx� 10m�
3�
Reduce the distance between the Amp 5�1
and the (mobile) device to below 10m�
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