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Propeller Head Plaza Technical and scientific discussion of amps, cables and other topics. |
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Propeller Head Plaza Technical and scientific discussion of amps, cables and other topics. |
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In Reply to: A Question for All... posted by thetubeguy1954 on July 31, 2022 at 21:34:59:
Lamp cord has the hot and cold wires in parallel. In that scenario, the electromagnetic flux behaves in certain ways, some of which are generally regarded as bad. E.g., the electromagnetic flux going down the hot (+) wire to the load induces a current in the cold wire.
That is why the first Transatlantic telegraph cables (before Lincoln was President) were terribly slow and inefficient. The electromagnetic flux going down the wire induced a current at right angles, and when that current hit the surrounding water, it made a right turn, so there was an induced current in the opposite direction dragging the signal's speed down.
Queen Victoria's message to President Buchanan was something like 92 words, but it to something like 8 hours to send.
Self-taught math genius Oliver Heaviside (Wiki him!), a UK Post Office employee, by the use of math alone, in 1880 designed the first true coaxial transatlantic cable.
However, for various reasons, most speaker cable designs these days are not simple 1880-style coaxial cables. Nordost's entry-level cables, for instance, attempt to solve the self-inductance problem in a different way. Whereas Cardas' very complex Clear speaker cables are essentially (IMHO) an elaboration on the idea of the coaxial cable.
Cardas also takes into account the mechanical motion induced in the wires by the transit of the electromagnetic flux going down the wire.
So, in conclusion, there are no "best" answers in a vaccuum each by itself. A modern loudspeaker cable is a complex system, and the case with most complex systems is, "In order to get more of this, I have to give up some of that," even if the only thing being sacrificed is affordability.
I have designed S/PDIF and Word Clock cables and AES digital cables and also electric guitar cables, but speaker cables present complexities orders of magnitude greater than those cables. IMHO.
amb,
john
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Follow Ups
- You left out topology--the physical design and / or weaving. - John Marks 06:46:04 08/01/22 (4)
- RE: You left out topology--the physical design and / or weaving. - geoffkait 14:54:23 09/29/22 (0)
- RE: You left out topology--the physical design and / or weaving. - 6bq5 12:16:49 08/01/22 (2)
- No no no no no - John Marks 14:51:54 08/01/22 (1)
- RE: No no no no no - 6bq5 14:59:46 08/01/22 (0)
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