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5. SETTING INTO OPERATION
5.1 Rack installation
Install the unit on a plane surface or in your rack. For 19" (483 mm) rack installation, 1 unit is required. When
mounting the unit into the rack, please make sure that there is enough space around the device so that the
heated air can be passed on. Steady overheating will damage your device. You can fix the unit with four
screws M6 in the rack.
5.2 Connecting audio devices
Disconnect the DML-22 from the mains and switch off the units to be connected before making or
changing the connections.
1
The XLR inputs and outputs can be connected both balanced and unbalanced. Balanced cables
provide +6 dB more output and guarantee a better protection against interference in case of long cable
runs. Connect the signal source (e.g. preamplifier, mixer) to the input jacks INPUT A and B.
2
Connect the PA amplifiers to the output jacks OUTPUT A to B.
3
Connect the power supply unit to the power input jack and the mains plug to a mains outlet. Thus the
unit is powered on and is in standby mode. By disconnecting the unit from the mains it can be switched
off.
The power cable can be secured to the unit via the strain relief.
Use only the supplied power unit. Always disconnect the mains connector when you wish to change
connections, move the unit to a different place or if it is not used for a longer period.
XLR connection
Balanced use with XLR connectors
2
1
3
Input
For unbalanced use pin 1 and pin 3 have to be bridged
1
1 = Ground / Shield
2 = Hot (+)
3 = Cold (-)
2
3
Output
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