Chapter 2
Overview ATU44MK2
The panel of the ATU44MK2 contains all connections for the loudspeaker level and line
in & outputs, accompanied with an input selector switch.
1) Loudspeaker input:
The loudspeaker input is implemented using a 5-pin terminal block connector with
various tappings for 100V, 70V, 50V and 33V audio levels. Depending of the available
audio level, the input signal shall get connected to the appropriate tappings.
2) Balanced line level input:
The balanced line level input is implemented using a 3-pin terminal block connector.
Line level input signals (balanced or unbalanced) shall be connected to this terminal.
3) Input selector switch:
This switch allows selection of the input signal between line level (left position) or
loudspeaker level (right position) inputs.
4) Balanced line level output:
The balanced and galvanic isolated output signal connection is available on the female
XLR connection. The level of this output connection matches line level (depending of
matching input levels), allowing it to be fed directly to any line level input on amplifiers
or pre-amplifiers.
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General