I do agree using gold cables is a joke.
But gold doesn't oxidate as well, thats one of the benefits.
Most contact problems of cabling are real mechanical problems combined
with oxidation.
Oxidation would make the resistance higher and therefore the quality of
a signal lower. In coax, higher resistance would result in more signal
reflections in the cable, so lower quality.
http://en.wikipedia.org/wiki/Gold
The best way I know but, not always possible: create a good contact and
seal it of from the air, keep it away from heat sources. So it can't
oxidate. Heating and cooling of contacts makes the connectors move.
For lower power electronics I used a hot glue pistol to seal contacts.
Never had any problems any more for contacts treaded this way. Never
used gold, but I suspect this would be the main reason.
You would only be able to hear the difference between gold an other
connectors, if there is already some bad contact.
gislain wautriche wrote:
I don't believe in ultra-quality cables, and seeing some made with
gold, men ! that's a real joke !
To be clear : cable is cable, it's just a piece of metal.( Some people
claims they can hear the difference between a gold and a copper cable,
come on, let's be serious)
BUT cables are build in a certain way, it looks like people are
messing a lot, here around.
there are different cable types :
- coaxial cables are shielded which makes them noise protected
- twisted pairs are used when the signal is balanced (balancing signal
is a way to protect from noise) when not balanced, this cable type is
highly noise sensitive.
Cables also have impedance which is extremely important in high
frequency range.
- video cables are 75 ohms (coaxial type)
- phones (and network) cables are 100 ohms (mostly twisted pair types)
- audio cables have no impedance ( theorie : 0 ohms) because they
carry low frequencies signals (coaxial type)
Messing with cable impedance will result in signal loss.
Messing with cable type will result in noise gain.
When in audio range, the less impedance, the better. So theoretically
gold is better than any other metals.
But, actually the audio input impedance of every apparels is so high
that :
- there's no real relevant signal loss.
- it must be well shielded (coaxial) because there's an "antenna
effect" when connected to a high impedance input.
Conclusion is to use the correct cable type and impedance, use quality
cables, but don't go buying gold when it works as good with normal ones.
Gis.
On Tue, 2005-06-14 at 23:29 +0100, Karl Lattimer wrote:
however regardless of your rant, UTP carries a better signal. Thats
why we use it in networking instead of coax, in networks we grew out
of coax in the eighties apart from the odd ring of posterity.
I wouldn't dream of disputing that. I also think it's entirely
irrelevant for the kind of signal that's sent over a typical home
theater cable.
Cheers,
Jason.
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