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Audio and Video Talk
Cable Talk
Plausible reason for cables sounding different
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<blockquote data-quote="chrisc" data-source="post: 937350" data-attributes="member: 746"><p>I would suggest that the old cable may be damaged. Also, one or more of the plugs may not be making intimate contact with the socket</p><p></p><p>Many cables brought to me can successfully be fixed by unsoldering the plug, cutting off a few mm of the end of the cable, cleaning the plug and resoldering. Is also possible that the original soldering job was dodgy on account of the metal being dirty or corroded. To achieve a 100% soldered joint, both surfaces must be pristine</p><p></p><p>Then you get mechanical wear. This is often apparent with mobile phone charger leads, as people are a bit rough with it or else detach it from the phone using the cable and not the plug. The copper strands inside are usually extremely thin and copper is not a strong material</p><p></p><p>To explain cable damage a bit more, the shield is usually wrapped in a braid fashion, as can be seen from this image</p><p></p><p>If the cable is bent over a sharp corner, the braid can separate and allow in the hum through induction and exhibit the symptom described</p><p></p><p>(An induced current (the hum) can be created in a cable lying adjacent to another carrying current with the collapsing magnetic field due to the 50Hz AC travelling through - this is how transformers operate)</p><p></p><p><img src="https://i.imgur.com/madTKYo.jpg" alt="" class="fr-fic fr-dii fr-draggable " style="" /></p></blockquote><p></p>
[QUOTE="chrisc, post: 937350, member: 746"] I would suggest that the old cable may be damaged. Also, one or more of the plugs may not be making intimate contact with the socket Many cables brought to me can successfully be fixed by unsoldering the plug, cutting off a few mm of the end of the cable, cleaning the plug and resoldering. Is also possible that the original soldering job was dodgy on account of the metal being dirty or corroded. To achieve a 100% soldered joint, both surfaces must be pristine Then you get mechanical wear. This is often apparent with mobile phone charger leads, as people are a bit rough with it or else detach it from the phone using the cable and not the plug. The copper strands inside are usually extremely thin and copper is not a strong material To explain cable damage a bit more, the shield is usually wrapped in a braid fashion, as can be seen from this image If the cable is bent over a sharp corner, the braid can separate and allow in the hum through induction and exhibit the symptom described (An induced current (the hum) can be created in a cable lying adjacent to another carrying current with the collapsing magnetic field due to the 50Hz AC travelling through - this is how transformers operate) [IMG]https://i.imgur.com/madTKYo.jpg[/IMG] [/QUOTE]
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Audio and Video Talk
Cable Talk
Plausible reason for cables sounding different
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