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In Reply to: balance vs unbalanced posted by rockanroller on April 26, 2015 at 17:43:38:
An unbalanced interconnect has two wires, one carries the audio signal and the other is ground. A balanced interconnect has three wires, two of which carry the audio signal and one is ground. The two that carry the audio signal are 180-degrees out of phase with each other and the audio signal is extracted using a differential amplifier that detects out-of-phase signals only and rejects in-phase signals. The theory behind a balanced connection is that any noise picked up by the interconnect will be in-phase and thereby rejected at the amplifier input. In other words, only the audio signal will be transferred from one component to another without any additional noise. This allows very long cable runs with balanced interconnects without picking up any unwanted noise along the way. Professional equipment always use balanced connections because they often require long interconnects that sometimes exceed 100-feet.
Best regards,
John Elison
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Follow Ups
- RE: balance vs unbalanced - John Elison 18:18:39 04/26/15 (0)
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