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Re: Questions for Steve Eddy on dielectrics

Posted by Steve Eddy (M) on June 25, 2003 at 12:45:45

In Reply to: Questions for Steve Eddy on dielectrics posted by Kyu on June 24, 2003 at 21:22:30:

Does it mean it is irrelevant to use any thickness of the dielectrics in cables as far as linearity is concerned since they are not perfectly linear (and thus irrelevant to sound)?

Not quite sure what you're asking here. If something is not perfectly linear, it is relevant to sound, assuming the nonlinearity is audible. But again, I'm not quite sure what it is you're asking.

Would the signal distortion (if any) be comparatively higher in using a much thicker dielectric than a much thinner dielectric?

Depends. Using a thinner dielectric clearly reduces the bulk effect of the insulation (i.e. its contribution to increased capacitance). Whether this would ultimately lead to lower overall distortion will depend on the nature of the distortion between the dielectric used for the thicker insulation and the one used for the thinner.

Would it be subject to any RFI, EMI especially for thinner dielectric in case no braiding in cable is used?

The thinner dielectric will allow closer spacing between conductors which would reduce cable inductance and subsequently its susceptibility to magnetic field interference. Don't think there'd be much difference with regard to electric field interference, except perhaps the closer spacing of the conductors helping to keep the interference coupled to each conductor more the same so that a balanced input would be better able to reject it.

se

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