8
RackPack 4
Air Circulation
Always ensure sufficient air circulation in any installation or setup: always keep a distance of
about 4-5 cm (1 U rack space or about 2 inches) to the next device. This concerns especially
the space above and below the device because louvers are cut into top and bottom panels for
optimal heat removal.
For free placement outside of a rack please always use a level and stable surface. Never place
it on a soft surface such as a blanket or a cushion etc.
If the RackPack 4 is mounted into a rack, do not place units below the RackPack 4 that produce
excessive heat.
Power Connection
Always make sure that the position of the voltage selector on the back of the RackPack 4
corresponds to the voltage of your local power supply (115 V position: 110-120 V, 230 V posi-
tion: 220-240 V). In case of doubt please ask your dealer, a professional electrician or your
local power supplier.
Before you make or change any power or signal connections, turn off all connected devices
including the RackPack 4, and mind all security advices on pages 4 and 5.
Signal Connections
Before first connecting any other equipment – and in all other cases where you are connecting
cables with or from other sources – you should be sure to shut the unit and all machines to be
connected off. Otherwise you risk to damage the unit, connected gear or your ears.
On And Off
In switching on and off, you do not need to follow any particular sequence with connected
devices in the periphery of the RackPack 4. There is, however, the general rule for a chain of
devices in the audio processing to always turn on power amplifiers last and to turn them off
first. If specified sufficiently you can also switch the external power supply on and off through
a multiway connector or other main switches.
Hook Up
