Microphonic DIY Interconnect Suggestions?

[neddyboy]

I recently built a set of single silver conductor shielded interconnects. I used teflon tube slightly larger than the silver wire on the assumption that a little air around the wire would add to the insulating powers of the teflon. Not sure if the rest of the construction matters, but the layers went: silver/teflon tube/teflon tape/copper conductor/larger teflon tube/copper drain/aluminum foil/shrink tube.

Anyway, to my dismay I've discovered that the interconnects are microphonic. If I bump or even touch them I hear it. I assume (!) it's the movement of the silver in the airspace of the smallest teflon tube. Has anyone here come across this? I hate to take them apart and modify them only to find the airspace wasn't the issue.

 

[Osvaldo de Banfield]

Perhaps the connector itself are oxide coated inside them???

 

[SY]

Yes, I have. Tribolectricity is my hypothesis- the cure is the same, use polypropylene or vinyl instead of Teflon.

 

[neddyboy]

Tribolectricity -- had to look it up. Silver and teflon are the worst pairing apparently. Well, damn! I think I'll try pulling off the plug ends, sliding out the solver wire, and somehow reinsulating it before sliding it back into the teflon. Excellent ideas! Yours, not mine. Thanks.

 

[aptquark]

dude...

http://www.diyaudio.com/forums/cons...y-contribution-site-if-anyone-interested.html

skip forward...alot of talking in the beginning.

 

[sq225917]

Used cotton tube.

 

[DF96]

So are we saying that the favourite (for some) conductor and the favourite (for some) insulator don't work well together, at least for a home-made (loosely structured?) cable? How unfortunate! Maybe I will stick to my cheap copper in PVC interconnects.