Playback occurs without bass
› Connected loudspeakers poles are reversed.
› Check if the amplifi er’s BASS control dial has been set to a minimum.
Playback occurs without treble
Check if the amplifi er’s TREBLE control dial has been set to a minimum.
Any repairs other than those mentioned above are to be carried out solely by an aut-
Carry out a technical safety inspection on a regular basis, e.g. check if the power cable or housing
may have become damaged.
If there is reason to believe that the device can no longer be operated safely, then disconnect it
immediately from the power supply and secure it against any unintentional operation. Carefully
remove the power cable plug from the wall outlet and where applicable switch off the corre-
sponding circuit breaker fi rst.
It can be assumed that safe operation is no longer possible if:
› there is visible damage to the device or power cable,
› the device no longer works,
› it has been stored for a longer period of time under unfavorable conditions
› or exposed to rigorous transport conditions.
Always adhere to the following safety instructions before cleaning or servicing the device:
Live parts may be exposed, if the covering is opened or parts are removed.
The device must be disconnected from the power supply source prior to service,
maintenance or repairs.
Capacitors within the device may still carry voltage even though they have been
disconnected from all power supply sources.
Repairs are only to be carried out by qualifi ed personnel, who are familiar with the
hazards involved and the relevant regulations.
Transporting or sending the device
Please retain the original box and the packaging material in case you need to transport or send
the device out for maintenance at a later date. Please note that the device should be repacked in
the original packaging. The box and packaging have been especially developed for this device in
order to protect it during transport and against damage. Retain this instruction manual for futu-
re reference and where required pass it along with the device if handed over to a third party.
Keeping the external case clean
Never use volatile fl uids near the device, as for example insect spray. Avoid letting the device
come in contact with rubber or plastic products for longer periods of time. These could other-
wise leave marks behind.
Maintenance, handling and cleaning