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Cable Asylum Interconnects, speaker wire, power cords. Ask the Cable Guys. |
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Cable Asylum Interconnects, speaker wire, power cords. Ask the Cable Guys. |
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In Reply to: OK, now you're cookin', Todd! posted by bartc on March 9, 2007 at 05:26:15:
Damping standing waves requires use of the appropriate materials at the right locations.Generally, the electric component of a standing wave is always maximum at the ends, no matter what harmonic of the fundamental, as long as the end is terminated in a higher impedance than the cable characteristic impedance. Carbon fiber is useful to absorb energy from the electric field.
The magnetic component is always maximum at the center of the cable under the same conditions, so a Power Wrap is useful at the center.
Both types of materials are useful at the electric and magnetic maxima for harmonics of the fundamental, so covering the entire cable with both carbon fiber and Power Wraps will dampen all the harmonics as well as the fundamental. This is one case where it is true that if a little damping is good, more is better.
Putting carbon fiber at the ends and a Power Wrap at the center will dampen the fundamental ringing tone and some energy of the harmonics. Extending the coverage is expensive and cumbersome, but improves the cable performance by improving the damping of the higher harmonics as well.
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Follow Ups
- Clarification - Al Sekela 10:10:53 03/09/07 (1)
- Do stop me from quoting theory! LOL - bartc 14:45:51 03/09/07 (0)
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