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BASS GIG
A balanced line is a three-conductor system in which two signal wires carry an equal, but
opposite voltage with respect to the ground wire. The ground wire acts only as a shield
and does not carry any audio signal current. Outside interference is either shielded from
the internal signal conductor, or if it gets into the cable is cancelled out by the opposite
signals at the receiving end. Balanced connections are preferred for long cable runs.
An unbalanced cable is a two-wire system where the shield (ground wire) acts as one of
the current carrying signal conductors. The center conductor enclosed by the shield is
commonly known as the “hot” conductor. Unbalanced audio cables do not reject noise
as well as balanced lines. Unbalanced lines are typical in home hi- type systems and on
the outputs of electronic musical instruments. These work well if the distance between
the components is short, the signal level is relatively high and all of the electronics used
in the system are plugged into the same AC outlet.
Balanced vs Unbalanced Lines
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