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Re: "Audio for Dummies"

>"He is a one-dimensional thinker - there are only R's, L's, and C's in his book when he sees a crossover network - no nonlinear permittivity, permeability, no dielectric absorption, no nothing else."
Actually it is all of those effects that you mention that result in R, sub L and sub C.<

I lost you there. Now dielectric absorption is usually modelled as a series of R's and C's in a network that stretches out several nodes (to infinity would be more accurate if you can do that), and maybe there's some sprinkling of L's to be more complete. But nonlinear dielectrics are another thing altogether. That's a distortion mechanism. And they even have hysteresis like an iron core inductor has, which is more complex than a simple loss of permittivity with voltage. You can't model distortion with a linear component. R's, L's, and C's are all linear, by definition, in a textbook and on a computer. That is fundamental.

Also, applying the most basic EE equations, Maxwell's equations, assumes a linear field of dielectrics and magnetism. It's not there in plastics, but the assumption is made all the time in CAD solutions to such problems. I have never seen anyone apply nonlinear analysis to Maxwell's equations, but we know it's in there.

Kurt



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