Dynacord DPA 8150, User Manual

Page: 13 / 46

operation, the maximum permissible ambient temperature of the other devices in the rack
cabinet must be observed. DPA-series output stages can be mounted in racks directly on top
of one another without any clearance between them. However, since the amplifier housings
heat up during operation, it may be advisable to maintain a distance of 1 height unit (1 HU)
from other devices without forced cooling (e.g. controller).
!
Caution!
The ventilation openings on the output stage must not be blocked/closed. In the absence of
cooling, the output stage can shut down automatically. Keep all ventilation openings free of
dust/deposits that would impede the flow of air. Do not operate the output stage near heat
sources such as fan heaters, ovens or other heat-generating devices. To ensure problem-free
operation, the maximum ambient temperature of +45 °C must not be exceeded.
For installations with a central cooling system or air-conditioning units, which are often used
in permanent installations in special equipment rooms, it may be necessary to calculate the
maximum heat emission level. See also the following section for more information on this
topic.
Heat buildup
The requirements for the power supply and lines can be determined using the tables in the
section entitled Technical data, page 33 . The power received from the mains is converted
into output power for the speakers and into heat. The difference between the power received
and the output power is called power dissipation (P
d
). Heat generated from this dissipated
power may remain in the rack. Appropriate measures must be taken to discharge the heat. The
tables can also be used to calculate the heat ratios in the rack/cabinet or to work out the
dimensions involved in any waste air measures required. The P
d
column shows the power
dissipation values for various operating statuses.
Standby mode
In standby mode, the energy consumption of the output stage is substantially reduced. It does
not matter whether the output stage is supplied with power via the mains input or the DC
input. In standby mode, the following functions are still available:
•
Remote control via the CAN bus
• Monitoring of the mains input
• Monitoring of the DC input
• Function of the control port
Standby mode is activated via the REMOTE CAN BUS, and is indicated by the STANDBY LED.
Connections
Audio inputs
The following section describes the various audio inputs on the output stage.
Direct input
6
6.1
PROMATRIX 8000 POWER AMPLIFIER Safety information | en 13
User manual 19-Aug-13 | 03 | F01U217494