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Binding posts tightening physics and drastic change

Hello to you guys. I just do not get it from scientific point of view. Here’s the case. As a Hi Fi man since many years I came to buy a pair of great monitor ( passive ) speakers ( the company has in this case nothing to do I guess but this is a second pair of the same speakers I had before ) I just happened to spend hours and hours to get the right position and sound ( as all monitors are very susceptible to set ups and so on ) and now this - as a purist I always tighten but not overtighten binding posts with banana connectors - yesterday I do not know why I made loose a bit all the screws on 4 binding posts so that they are not so strongly tightened up - and now the sound finally came to life and sounds much better with a bit more bass - I am no kidding in this case as I am an analytical listener. Please explain what the hell ? Almost anyone says that tightening should improve the sound - here it is quite opposite. Regards.
P.S. The more to add that there are no cable jumpers but metal (copper) links.
audiodav

Showing 1 response by glennewdick

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glennewdick
1,500 posts
 

Was that the first time you moved your cables in some time? this would -could effect sound quality because if your cables have not been moved in a long time your basically reseating the cables and cleaning off the corrosion and making a better connection. always remove your cables periodically for this reason. Also before you evaluate new cables reseat you old ones first so your not taking in the cleaned contact surface as the new cable sound.

one thing we don't seem to think much about is contact corrosion from dissimilar metals (silver and copper, copper and iron for example). also copper corrodes quite fast on the surface.

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