how do the bettercables silver serpents compare to the version that they replaced?

Discussion in 'Archived Threads 2001-2004' started by Paul_B, Sep 22, 2002.

  1. Paul_B

    Paul_B Agent

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    how do the bettercables silver serpent component cables compare to the version that they replaced?

    I'm thinking about buying the silver serpents to go between my Pioneer Elite DV-09 and 610HD, thus replacing the previous version of the better cablescomponent video. if I do this, I will be moving the previous bettercables to the new bedroom system between a Panasonic RP82 progessive scan and a 47" Panasonic PT47WX51.

    are the old bettercables capable of passing a high definition signal?

    the other (less expensive) option is to leave the older bettercables component cables on the Pioneer Elite system and get the AR Master series for the Panny system.

    cable lenght in question is 3 meters, though I could get away with a 2 meter AR Master Series on the Panny system.

    any comments/feeedback appreciated.
     
  2. Bob McElfresh

    Bob McElfresh Producer

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    My understanding is that the older BetterCables product was Canare coax with Canare RCA plugs - very well thought of for HD signals. The current Silver line is really - silver. (The center coax has a coating of silver.) People with 80-100" projection system really like them. They would be a great choice for your Pioneer system.
     
  3. Chu Gai

    Chu Gai Lead Actor

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    well for starters the grace period has changed and I believe it's down to 30 days now. BetterCables, IMHO, in order to differentiate themselves from the many cottage industries that sprouted up offering broadcast quality cables (it's important to note here that RCA's are the limiting factor, all else being equal) has gone to what's commonly referred to as microwave based cables that are silver coated. A simple web search will indicate there is no shortage of companies offering such cables so OEM'ing them without identifying markings is trivial. This coating has as its purpose the ability to handle enormous amounts of power, far far greater than one could possibly have at home. The signals in broadband travel largely down the center of the center conductor and the silver plays a neglible role. At long distances, it becomes advantageous to go with thicker gauge cable to minimize signal losses however we're talking about hundreds of feet. You can, if you wish get further information regarding video cable by contacting some of the actual manufacturers of cable such as Belden.
    So I don't know if this is information was helpful but it's accurate.
     
  4. Bob McElfresh

    Bob McElfresh Producer

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  5. Chu Gai

    Chu Gai Lead Actor

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    one too many centers on my part...down the center conductor that is...
    Allow me to explain...the skin depth is given by the following equation:

    [1] SD=1/(sqrt(pi * f * mu * sigma)

    sigma = conductivity for copper = 5.8 x 10^7 mho/m
    mu = permeability of free space = 4 x pi 10^-7 H/m

    this simplifies to

    SD= 0.0661/(sqrt (f)) which gives the answer in meters.

    For a 4.2 mHz signal we get 0.032 mm

    If they're coating (plating) the silver according to MIL-C-17, then the thickness will be 40 microinches minimum. In other words, 40 millionth's of an inch.

    To convert to mm:

    (40 x 10-6) * 25.4 = 0.001 mm

    Hence if we neglect for the exponetial decay (not really fair), a little more than 3% of the signal rides the outside.

    [1] Hayt, William, H. Jr.: "Engineering Electromagnetics", 4th Ed., p400
     
  6. Bob McElfresh

    Bob McElfresh Producer

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    But you calculated the Skin Depth using the sigma for copper. Whats the value for Silver?
    (Cool use of the equations Chu [​IMG] )
     
  7. Chu Gai

    Chu Gai Lead Actor

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    groan!!! you get the point, yes? so make it 5% then, lol
     

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