Manual

DO NOT REMOVE MAINS CONNECTOR GROUND
IT IS ILLEGAL AND DANGEROUS
Lift Position
Ground Position
to Pin 1
of the XLRs
10,5 mm
7,5 mm
442 mm
396 mm
412 mm
465 mm
88,1 mm
76,2 mm
3 INSTALLATION
USER MANUAL
D - P O W E R S E R I E S
P. 12
D - P O W E R
S E R I E S
3.3 Mounting
Use four screws and washers when mounting the amplifier to the front rack rails.
For mobile use, the amplifier should also be secured using the 19” mounting
elements on the rear panel.
3.4 Cooling
Under normal operation of the power amp, overheating should never be a prob-
lem. The air is taken in from the front and out through the back. It is essential
that while the amplifier is running the air is able to circulate around it freely.
The efficiency of the cooling will depend on the immediate environment (e.g.
an enclosed rack, direct sunlight). If the amp is installed in a case, the open area
at the back of the case must be at least 140 cm². This area should be in line with
the amplifier.
If this cannot be achieved a forced ventilation system has to be used.
3.5 Ground Lift
The input signal ground (pin 1 for all 4 XLRs) is connected to the ground of
the mains supply. In order to avoid ground loops, this connection can be sepa-
rated via a resistor. The ground potential of the power amp and the ground of
the loudspeaker always remain connected to the ground of the mains supply
regardless of the setting of this switch.
Removing or taping the mains connector ground is illegal and dangerous.