Setup; Rack Installation; Making The Connections; Inputs - Omnitronic MCD Series User Manual

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SETUP

Rack Installation

This amplifier is built for 19" racks (483 mm). This rack use should be a double-door rack where front panel
and rear panel can be opened. The rack should be provided with a cooling fan. When mounting the amplifier
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 amplifier with four screws M6 in the rack. If several devices are to be installed, make sure
that you leave 1 unit space between the devices.
Be careful when mounting the amplifier into the rack. Put the heaviest devices into the lower part of the rack.
Be aware that fastening the amplifier with four screws on the front panel is not enough. In order to ensure
safety, additional fastening by using ground and side bars is necessary.
If racks are to be transported or used for mobile use, additionally fasten the devices by connecting the rear
brackets with the side or ground bars of the rack. Thus, the amplifier cannot be pushed backwards. The front
panel alone is not designed to absorb acceleration forces occurring during transportation.

Making the Connections

All connections have to be made or changed only if the amplifier is switched off!

Inputs

Connect the output of a preamplifier or mixer to the balanced XLR inputs or the first three contacts of the
plug-in screw terminals. For better handling, the connection terminals can be removed from their plug-in
connection. The input signal should have line level. For rated power of the amplifier an input signal of 2 V is
required as a minimum.
• Contact configuration of the inputs:

Feed-through of the Input Signal

The input signal which is fed to the XLR jack of a channel can also be picked up from the plug-in screw
terminals of the same channel and fed through to the input of another channel. For this connect in each case
the contact 1 (+Life) and 2 (-Life) of the plug-in screw terminals of both channels with each other. The
contacts 3 (Shield) must not be connected externally as they are already internally connected.
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