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Fastest Audio Cable -- Really!

D

DaveC

Jan 1, 1970
0
There is a whole industry based on selling very expensive hi-fi hardware
to gullible rich people. Probably many rich people are pretty stupid,
just as many poor people are highly intelligent. Not all wealth is
earned, for one thing - it's good to inherit, for example, and luck
often plays a big role. Also you can make money by having a certain
limited kind of intelligence, for example by knowing how to con people
into buying stuff they don't need. Ethics can be an obstacle to getting
rich.

It's all about not having the technical wherewithal to distinguish between
fact and fraud. Really. Some folks are just unable to know who is telling the
truth, standing in front of them. So, I think the wealthier of this class
simply think "Best to spend more $$ just to be sure."

That's the best I can come up with to explain the phenomenon of the market.
 
H

Helmut Wabnig

Jan 1, 1970
0

I know a guy who claims that he can hear when a digital audio signal
cable produces jitter or other data transmission errors like retries
and too many handshake requests.

What can a cable do wrong?
Firstly there may be undefined and changing contact resistance
at the plugs and at the crimp connections.

Then there may be a bad shielding and interference with local EMF
fields from 50/60 Hz up to the whole radio band frequencies.
Although they are analog signals, they add to the digital signal
in form of jitter noise.

Then there are reflections at both cable ends if not within the cable
itself also. The impedance at the connector ends changes a little even
in a good cable. You have to unroll the individual wires and spread
them out for the crimp or solder pins. The way how that is done
influences the standing wave ratio, SWR, of the transmission line.
Reflections also add to the jitter noise and cause parasitic mantle
currents. The cable may start to transmit like an antenna.
Thousands of times the governmental radio monitoring services
had to search and find bad digital data transmission cables,
mostly from badly connected computer networks.
A digital audio connection is just such a thing.
When you have bad luck, and the cable lengths fit into the civil
air band airport tower frequency of your neighbouring airport,
you better hide when they come after you.

Then there is the question of homogenity.
Has the cable been bent sharply, quenched or otherwise
mechanically mistreated?

While the above sales advertizing is rather laughable,
no RF engineer will laugh when it comes to low noise
HF transmission over cables with connectors in between.
The engineer will have a bad time unless everything is thoroughly
checked with oscilloscopes, frequency analyzers, SWR bridges
and reflectometers.

This was the main thing in short, but the list is incomplete.
w.
 
R

Robert Baer

Jan 1, 1970
0
Salmon said:
Would not an rf cable be faster than an audio cable. I have used a coax
cable for audio. It worked well. The trouble is that good rf coax is too
cheap to make as much money selling to sound, or is it unsound, nuts.
No, no, no.
Yah gots it awl rong.
Eet Ees een mar-que-tyng.
Zee improved cable is the result of decades of engineering
improvements culminating in a secret, patented design that completely
contains full brilliance, tempo and timing of your favorite music.

Und so wieder..
 
R

rickman

Jan 1, 1970
0
My question is: How can people so stupid as to buy into such nonsense
get the money to buy it. This seems to indicate that being stupid is no
barrier to becoming rich.

Duh! Do you really not know that looks mean more than brains?

 
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