A solid crimp is, I believe, generally held to be more than a solder joint but this is in no way specific to audio cables.
On Saturday, October 5, 2019, jimlux <[email protected]> wrote: > On 10/4/19 1:41 PM, Poul-Henning Kamp wrote: > >> -------- >> In message <[email protected]>, MLewis writes: >> >> With audio signals, a soldered crimp is one of the worst possible >>> connections. >>> >> >> Dabbling in audio-homoepathy are we ? >> >> No, don't bother responding unless you have a reference to peer-reviewed >> scientific documentation for you claim. >> >> > > well.. > https://nepp.nasa.gov/files/27631/NSTD87394A.pdf > > doesn't give why, and doesn't explicitly say "don't crimp and solder" but > does basically say "crimp crimp connectors and solder solder connectors" > > TE "Crimp Theory Fundamentals; Advanced" - explanation of what makes a > good crimp, doesn't discuss solder > https://www.youtube.com/watch?v=bAO9eCS65jw > > There are actually splices designed to be crimped and soldered - but I > suspect their applicability is for specific applications. > > > On Monday, I will try to find one of the connector reliability people for > some references. One challenge is that these practices ("don't solder > crimped connectors") have been around for a long time (at least 70 years), > so there may not be recent published information on it. (recent papers I > found on solder joint reliability are all about PWB connections - esp BGA, > CGA, etc.) > > And, to be honest, materials have changed. > > There is *great* resistance to changing any assembly and workmanship > standard - nobody wants to be the person who says "we don't need to do > *that* anymore" and then a disaster happens, and one of the potential > causes is "you didn't do *that*" > > It is entirely possible that the original rationale and explanation is no > longer valid. > > There is no question that in a vibration environment, solder is deprecated > (it's hard, brittle, work hardens, etc), not to mention all the issues with > RoHS. That said they do use solder joints in high reliability systems - > just with attention to the support of the wire. > > https://www.tandfonline.com/doi/full/10.1080/14686996.2019.1640072 > https://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/20100029736.pdf > > > > _______________________________________________ > time-nuts mailing list -- [email protected] > To unsubscribe, go to http://lists.febo.com/mailman/ > listinfo/time-nuts_lists.febo.com > and follow the instructions there. > -- Homo sum humani a me nihil alienum puto. _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com and follow the instructions there.
