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Message: <blockquote data-quote="n2audio" data-source="post: 1755507" data-attributes="member: 540940">mag fields don't cause noise - alternating mag fields cause noise.  The only component of ac in a power wire is varying + dc current.  It's not much of a alternation compared to ac current.  On top of that - the current drawn would have to be very high for induced noise to be prevalent - at which point the system would be playing very loud and there's no possible way any noise would be heard.  Turn the system down to hear the noise and the high current in the pwr wire is no longer flowing.It's a fine theory corsica, but just because EMI CAN induce noise in adjacent cables doesn't mean it's going to happen in your car.</blockquote>

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