Cables: Time is of the Essence, Part 3
[We began this series of articles by Belden engineer Galen Gareis in Copper #48 , and continued it in Copper #49. We now present the conclusion of Time is of the Essence, on time-based distortions in audio cable design,—Ed.] 7) Dielectric effects Dielectrics have a disproportionate impact upon weak electromagnetic signals. Four-fifths or more of the current magnitude at audio frequencies is below 3,000 Hz, and this clumping is often called “spectral density”. This energy does not stop in plastic or air. It emanates out in an inverse-log power decay through all the materials it encounters along the way. Electromagnetic fields are most...
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