Re: earphone cable?

newsgrouppost@xxxxxxxxxxx wrote:
> Hi Glen,
>
> Thanks for the posting, and the link to Cooner.
>
> I think you just nailed the description of the cable I am trying to
> source!

He diddn't, that's the nasty stuff.
The good ones have a core of kevlar, or some other structural fiber, with the copper bundles loosely wrapped round them.

This means that the copper is not stretched much, and does not fracture
rapidly.

I'd like some decent ones.
Kevlar core, with gold conductors.
Gold as it does not work harden and fracture.

The actual amount you need is small.
For a (say) 1 ohm resistance over 2.8m (1.4m cable doubled), you need
about 1/3 ohm/meter.
Electrical conductivity of gold is 2.2*10^-8 Ohms m.
So, that's about .25mm diameter, or about 60 cubic mm per m, or 240 for
4 conductors.
For a typical 1.2m cable, that's about 300 cubic mm, or .3cc, or 6g.
Or about 1/10 troy ounce, or about $30 worth.

Far less than some headphones are selling for.

.

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