12
d:series
amplifi
ers
manual
startup
responsibility of the user
2.6 - responsibility of the user
Operating voltage
The power amplifi er receives its power supply via the mains connector, which is provided as a powerCON
connector.
Depending on the ordered unit, the d:series amplifi er supports mains voltage with 100-120 VAC or
220-240 VAC (50-60 Hz). The power supply unit which has an impact on the mains voltage is factory-fi tted
and cannot be changed arbitrarily on site.
During installation, always separate the power amplifi er from the mains. Connect the power
amplifi er only to a mains network which corresponds to the requirements.
The d:series amplifi er is delivered with a prefabricated power cord. If you have to change the main
plug for any reason and if you are not 100% confi dent of your competence to replace the mains
plug, engage qualifi ed personnel to do that job.
In case of questions concerning this matter, please contact sonible via e-mail:
Grounding
Your amplifi er has to be connected to a grounded socket outlet. Use balanced input connections and
cabling to avoid hum and interference noise.
Dangers at the loudspeaker outputs
The d:series amplifi ers are capable of producing dangerously high voltage output that is present at
the output connectors. To protect yourself from electric shock, do not touch non insulated parts of the
speaker cables during operation of the power amplifi er.
The external wiring connected to the speaker terminals have to be installed by a qualifi ed instructed
person or ready-made leads or cords of appropriate capacity shall be used.
As the amplifi er outputs produce high voltage, do not connect or disconnect speaker cables when the
mains power is on. Also, attach the safety cover on the speaker terminals for safe operation and to comply
with electrical product approvals.
The powerCON is a connector without breaking capacity, i.e. the powerCON must not be connected
or disconnected under load or live.
Speaker system damage
The d:series power amplifi ers provide high power output that might be dangerous for human beings
as well as for the connected speaker systems. High output voltages can damage or even destroy the
connected speaker systems, especially, when the d:series amplifi er outputs are bridged by the user. Prior
to connecting any loudspeakers, make sure to check the speaker system’s specifi cations for continuous
and peak power handling capacities.
Maintenance
For safe and reliable operation, the dust fi lter of the front panel, behind the grilles, can be removed and
cleaned to ensure maximum airfl ow through the device.
If the dust fi lter is not maintained when needed there will be safety risks. There is also a risk that the unit
will malfunction since it is dependent on constant airfl ow from front to rear. If the dust fi lters are not clean
and the unit malfunctions, any resultant problems will not be covered by the warranty.
A detailed instruction on maintenance work can be found in chapter 8 ‘maintenance & update’ (page 45).
If the amplifi er malfunctions due to dirty dust-fi lters, any required repairs
or resultant drop out costs are not covered by the warranty.
