How do I convert balanced to unbalanced signals and vise versa ?
There are two types of balanced connections. One is the transformer coupled and the other is active. When converting a transformer coupled I/O to unbalanced I/O pins 1 and 3 must be shorted together and tied to the ground of the 2 conductor connector (i.e. RCA or 1/4"). Pin 2 of the balanced signal should be tied to the center pin or "hot" conductor of the unbalanced connector. When connecting an active balanced output to a unbalanced input pin 2 is tied to the center or hot conductor of the unbalanced signal and pin 1 is tied to the ground conductor. Pin 3 is not used for this method. To connect an unbalanced output to a balanced active input you connect the center or hot conductor of the unbalanced signal to pin 2 of the balanced input. Pin 1 can be tied to pin 3 or left unconnected. Pin 3 must be tied to ground, we like to tie pin 3 to ground as the most trouble free connection scheme.
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