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In the Forum: Audio Discussions
In the Thread: It’s mad, mad, mad... electricity.
Post Subject: Neutral "Input" and Balanced SystemsPosted by Paul S on: 9/5/2012
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Mani, the neutral wire is meant to be "the" system ground, with zero potential, so it should not have any "input". It is known, however, that many factors conspire to contaminate ground wires (including the neutral wire) with electrical noises, and switching devices in particular are well known to foul their own nests, making any conductors they are on or near noisier. Given these facts, and barring other issues, then it makes sense that isolation from line noise equals less noise. Perhaps of interest here, I saw that PP specifically states that they will not accept responsibility for RFI problems, period.
The balanced systems used in "commercial" applications are about controlling hum and noise and tempering impedance/reactive issues over long cable runs. Additionally, commercial balanced ICs are often biased.
Best regards,
PaulRerurn to Romy the Cat's Site