PowerH SERIES
2.5 Ventilation
As with all Dynacord power amps with fan cooling, the airflow direction is
outside of the rack case than inside. The power
amplifier remains cooler and dissipating the developing waste heat in a specific direction gets easier. In general, setting up or mounting the power amplifier has to be done in a way that fresh air can enter unhindered at the front and
exhausted air can exit at the rear. When installing the power amp in a case or rack
system, attention should be paid to these details
to provide sufficient ventilation. Allow for an air duct of at least 60 mm x 330 mm between the rear panel of the power amplifier and the inner wall of the cabinet/rack case. Make sure that the duct reaches up to the cabinet’s or the rack case’s top ventilation louvers. Leave room of at least 100 mm above the cabinet/rack case for ventilation. Since temperatures inside of the cabinet/rack case can easily rise up to 40 °C during operation of the power amp, it is mandatory to bear in mind the maximum allowable ambient temperature for all other appliances installed in the same cabinet/rack case.
CAUTION:
Blocking/closing the power amp’s ventilation louvers is not permissible. Without sufficient cooling/ventilation, the power amplifier may automatically enter protect mode. Keep ventilation louvers free from dust to ensure unhindered airflow.
CAUTION:
Do not use the power amplifier near heat sources, like heater blowers, stoves or any other heat radiating devices.
CAUTION:
To ensure
For fixed amplifier installations in a device control room that incorporate a central
2.6 Groundlift
The ground lift switch allows eliminating noise loops. When operating the power amplifier together with other equipment in a rack case, setting the switch to the GROUNDED position is recommended. Set the switch to UNGROUNDED, when the power amplifier is operated together with appliances with differing ground potentials.
Owner’s Manual 13
