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DISTRIBUTION AMPLIFIER/ZONE MIXER/MIC SPLITTER DA-410.
INPUT TRANSFORMER (IT-DA)
In order to improve the input common mode rejection ratio and for a galvanic isolation with
the previous part of the audio system, it is available an input transformer.
Each XLR-3-31 input has an insert point for the input transformer; therefore, you could mount
four input transformers in the unit. In the following table are shown the correspondence between
the inputs and their corresponding input transformers.
INPUT
TRANSFORMER POSITION
LINKS TO REMOVE
INPUT AL
TR1
LK1 y LK2
INPUT AR
TR2
LK3 y LK4
INPUT BL
TR3
LK5 y LK6
INPUT BR
TR4
LK7 y LK8
Before placing the transformer, you should remove the links corresponding to the input
transformer indicated in the following chart:
In the following picture is shown the placement of the input transformer TR1 corresponding to
the IN AL input. It is important to keep in mind the placement of the input transformer pins so that
they coincide with the main board (four to the left and three to the right).
Remove the links corresponding to the input transformer. In
this case LK1 and LK2.
Place the input transformer, keeping in mind the position of
their pins (four to the left and three to the right), and solder it to the
main board.
OUTPUT TRANSFORMER (OT-DA)
In order to make a galvanic isolation with the next part of the audio system, it is available an
output transformer.
Each XLR-3-32 output has an insert point for the output transformer; therefore, you could
mount ten output transformers in the unit. In the following table are shown the correspondence
between the outputs and their corresponding outputs transformers and the links that you must
remove to place the output transformer.
