JBL EON 210P User Manual

Also see for EON210P: User guide Specifications User guide

Contents

18Section 7: ReferenceBalanced vs. Unbalanced LinesYour EON 210P PA system can accept either type of input. There are two basic types of audio systeminterconnections for audio signals: Balanced and Unbalanced.Balanced LinesIn audio, a balanced line is a three-conductor system in which the two signal wires carry an equal, but oppositevoltage with respect to the ground wire. The ground wire acts only as a shield and does not carry any audioVLJQDOFXUUHQW2XWVLGHLQWHUIHUHQFH VXFKDV5),5DGLR)UHTXHQF\,QWHUIHUHQFH LVHLWKHUVKLHOGHGIURPWKHinternal 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.Unbalanced Lines8QEDODQFHGFDEOHLVDWZRZLUHV\VWHPZKHUHWKHVKLHOG JURXQGZLUH DFWVDVRQHRIWKHFXUUHQWFDUU\LQJsignal 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 homeKL¿W\SHV\VWHPVDQGRQWKHRXWSXWVRIHOHFWURQLFPXVLFDOLQVWUXPHQWV7KHVHZRUNZHOOLIWKHGLVWDQFHEHWZHHQthe components is short, the signal level is relatively high and all of the electronics used in the system areplugged into the same AC service.