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Balanced power UPS or something like that...
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<blockquote data-quote="westom" data-source="post: 1409261" data-attributes="member: 138367"><p>The pops are no more destructive than strong music. It just sounds bad; making you feel it is harmful.</p><p></p><p> A pop is noise. Generally many RFI/EMC/EMI engineers are bald. It’s not an accident. These are some of the more challenging anomalies.</p><p></p><p> Generally a pop can come through an inferior power supply. Or is a current passing through the inputs.</p><p></p><p> Appreciate this example. A ground loop. A connects to B connects to C. Noise is an electric current. That means a loop must exist. Noise loop might be through A, B, then C. And back to A. The defect that completes that loop might be C. But disconnect A and the noise stops. Many will quickly assume A created the noise.</p><p></p><p> One path that can be part of the loop is safety ground (the third prong). You can use a cheater plug (a three to two prong adaptor) to temporary break that loop. But that is only to find parts of the loop path; not an acceptable solution.</p><p></p><p> If the power supply is inferior, then a UPS in battery backup mode might also create noise that would pass through the supply. Power the speakers from a UPS with its power cord disconnected from a wall receptacle. Learn how good that speaker's power supply is.</p><p></p><p> A pop generated by other appliances should not be heard. However, the solution to eliminating excessive noise is best implemented at the noise generator.</p></blockquote><p></p>
[QUOTE="westom, post: 1409261, member: 138367"] The pops are no more destructive than strong music. It just sounds bad; making you feel it is harmful. A pop is noise. Generally many RFI/EMC/EMI engineers are bald. It’s not an accident. These are some of the more challenging anomalies. Generally a pop can come through an inferior power supply. Or is a current passing through the inputs. Appreciate this example. A ground loop. A connects to B connects to C. Noise is an electric current. That means a loop must exist. Noise loop might be through A, B, then C. And back to A. The defect that completes that loop might be C. But disconnect A and the noise stops. Many will quickly assume A created the noise. One path that can be part of the loop is safety ground (the third prong). You can use a cheater plug (a three to two prong adaptor) to temporary break that loop. But that is only to find parts of the loop path; not an acceptable solution. If the power supply is inferior, then a UPS in battery backup mode might also create noise that would pass through the supply. Power the speakers from a UPS with its power cord disconnected from a wall receptacle. Learn how good that speaker's power supply is. A pop generated by other appliances should not be heard. However, the solution to eliminating excessive noise is best implemented at the noise generator. [/QUOTE]
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