Attero Tech unDIO2x2 User Manual - Page 8

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2.2 – Hardware Connections
The UnDIO2x2 accepts and drives either unbalanced or balanced audio devices. Refer to the following diagrams and
instructions for connecting different types of audio devices. Professional grade audio cabling is recommended to
achieve the best audio performance throughout the system.
2.2.1 – Input from an Unbalanced Source
To connect a 2-wire unbalanced source to the unDIO2x2, connect the positive output of the unbalanced source to the
positive input of the unDIO2x2. Connect both the source and unDIO2x2 input grounds together, and short the
negative input of the unDIO2x2 to ground at the input of the unDIO2x2.
To connect unbalanced sources with a 3-wire connection, short the negative conductor to the shield at the source
connection.
2.2.2 – Input from a Balanced Source
To connect balanced sources to the unDIO2x2, connect positive output to positive input, negative output to negative
input, and connect the grounds together through the cable shield.
© Attero Tech LLC 2014
Figure 3 - 2-Wire Unbalanced Source Connection
Figure 4 - 3-Wire Unbalanced Source Connection
Figure 5 - Balanced Source Connection
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unDIO2x2
User Manual
614-00013-05