Yawn, Frank Yawn, its creating a crimp, have you never done it for your car, do a pull test. Buy the correct crimp, the correct wire and a decent tool it doesn't cost the earth.
Instead of looking at/for solutions you just pull everything down with NO constructive content wot so ever. Glad you managed to google the molex crimp book it will tell you how to crimp...
You will harp on about crimps, but will happily solder, yet I wonder if you have had any training or done any tests, IPC-A-610 is a good start, all the assemblies and systems I work on are assembled by 610 qualified people, I often spend many a happy hour on SMT and assembly lines "playing".
Instead of looking at/for solutions you just pull everything down with NO constructive content wot so ever. Glad you managed to google the molex crimp book it will tell you how to crimp...
You will harp on about crimps, but will happily solder, yet I wonder if you have had any training or done any tests, IPC-A-610 is a good start, all the assemblies and systems I work on are assembled by 610 qualified people, I often spend many a happy hour on SMT and assembly lines "playing".
Hi,
Nothing wrong with that.
http://ecx.images-amazon.com/images/I/81pxQMXUnNL._SL1500_.jp
Hasn't silk a slightly lower DA than cotton?
Might be hygroscopic though....
Cheers,
Frank,
Your link doesn't work and your thinking on this issue doesn't hit home with me either.
Riboelectricity can produce electric potentials at line levels which are actually discernable by ear. I remember SY had an example some time ago.
At the same time, on DA, the field strengths in cable isolation is such, that I doubt the effect can be even measured at the lengths being used for audio. Anyways, coax with a PE insulation between core and shield is pretty affordable, and certainly is better in all respects than silk.
vac
As for insulation effect - i though it's common knowledge that different insulations change basic parameters of the cable such as capacity/resistance/inductance. And these parameters often vary by as much as 10 times between the cables of different construction. And obviously frequency dependent...
As for stranded vs solid - only prsonal experience. While i can't say silver always beats good copper, i do can say that solid core (of equal quality and good construction) nearly always beats stranded in transparency, detail, and especially cleaner\detailed highs. I think the mechanism at work here is very similar to jitter in digital cables - it's measureable and is cable construction dependent.
Just a guess - in multi stranded copper the % of conductor which comes in contact with air and oxidise is much much higher than in solid core conductor. And the more inhomogeneity there is in conductor the more chaos it causes to a signal...there must be a reason we want 99.999% pure copper. Not as much for absolute conductivity of signal (which is already good at say 98%), but it's uniformity.
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Hi,
The purpose of the little "rope" is to prevent the loosely fitting sleeving from touching the conductor.
I don't see how that could generate a tribo electric field as there would be no rubbing involved (assuming rubbing a piece of rope over a metal conductor would do that)
As for the broken link, ignore it. It was a pic of the cover of Van der Graaf Generator's Still Life" album. Peter Hamill , remember?
As for crimping: that's fine if you can meet all the conditions for it to work. In case of the WBT connectors it was a solution looking for a problem.
Using several solid core wires crimped together + a little screw to hold it down was problematic to say the least.
They realized that and subsequently abandoned the idea.
Cheers,
The purpose of the little "rope" is to prevent the loosely fitting sleeving from touching the conductor.
I don't see how that could generate a tribo electric field as there would be no rubbing involved (assuming rubbing a piece of rope over a metal conductor would do that)
As for the broken link, ignore it. It was a pic of the cover of Van der Graaf Generator's Still Life" album. Peter Hamill , remember?
As for crimping: that's fine if you can meet all the conditions for it to work. In case of the WBT connectors it was a solution looking for a problem.
Using several solid core wires crimped together + a little screw to hold it down was problematic to say the least.
They realized that and subsequently abandoned the idea.
Cheers,
Insulation affects cable construction which results in it's final characteristics.
Van den Hul Magnum Hybrid:
capacitance - 21 pF/m
inductance - 0,83uH
impedance - 199oHm
Kimber Kable 8TC
capacitance - 313 pF/m
inductance - 0,13uH
impedance - 20oHm
Tara Labs RSC PRIME 500
capacitance - 21 pF/m
inductance - 0,79uH
impedance - 85oHm
XLO ULTRA 12
capacitance - 167 pF/m
inductance - 0,24uH
impedance - 38oHm
And please do not make pointless posts. Either provide arguments or don't post.
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Nope different THICKNESSES of insulation will affect inductance (2mm PVA and 2mm Teflon will have the same inductance), insulation has NO effect on resistance, and the Er and size of insulation will affect capacitance. If we are going to make statements that are facts lets be a bit more accurate.
I did not make a pointless post, I put LOL, explain the mechanism of how multi stranded is worse than single core, I would also be interested on what you think causes digital jitter in cables and how you equate this to an audio analogue signal.
As I asked do you understand how signals propagate down wires, along PCB traces...
I did not make a pointless post, I put LOL, explain the mechanism of how multi stranded is worse than single core, I would also be interested on what you think causes digital jitter in cables and how you equate this to an audio analogue signal.
As I asked do you understand how signals propagate down wires, along PCB traces...
Of course, difference insulation has an effect of resistance..... resistance of the insulation it self.
IKR?
Some people just live in their own little worlds, I guess.
https://www.youtube.com/watch?v=Zvireu2SGZM
How is this so, though, what mechanism is at work here there has to be some reason and measurable data behind this... though its not something I have some across in other areas of electronics (discounting high frequency/power where litz is used). Skin effect is not an issue at audio frequencies so we can discount that.
The point of the quote is the emphasis within on it having to be done right, for the joint to have proper integrity - I can't recall at the moment where I came across the other discussion, but it focused on the drastic loss of quality in the crimped joint when some aspect of the process was not 100% correct - I think for an aircraft I would require a bit more than a pull test,
.My constructive comment is that it is the subtle flaws in the assembly that can cause sound quality problems - you know, that boring ol' concept of a chain and its links ...
Yes, great but horrible music, intended to sound nasty on even the best equipment I suppose.
Hi,
Not if you use high purity silver (99.9999% is about as good as it gets) IME.
Of course you could also use gold plated silver.
There's always that but it has to remain manageable, right?
Cheers,
The purer the silver the faster it tarnishes. In fact some of the other metals in silver alloys are specifically chosen to reduce silvers tendency to tarnish.
The slowest tarnishing silver I've come across were contact pins for multicore connectors at work. They were made of a silver nickel alloy with at least 10% nickel.
The 6mm^2 were an extreme example. 2.5mm^2 copper still has a lot less resistance per m than 1.5mm^2 silver.
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