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Propeller Head Plaza Technical and scientific discussion of amps, cables and other topics. |
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Propeller Head Plaza Technical and scientific discussion of amps, cables and other topics. |
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In Reply to: The highest BW cables are seemingly most often Ag. posted by Ugly on January 24, 2007 at 13:53:14:
ugly" ""
IMO, especially at audio frequencies, the inductance will be related to the permeability of the material surrounding the current ie conductor insulator air gaps etc. not necessarily the conductor itself.""
Your statement that inductance is related to the permeability of the surrounding material is 100% correct. However, the air and insulations all have a relative permeability of 1, which is the same as copper and silver. So the inductance will not be affected by air, insulations, woods, etc. Those materials will have a non unity permittivity, which will affect the electric field surrounding the conductor, not the magnetic one.For any cable which has a characteristic impedance significantly larger than the load, the dominant characteristic of the cable will be the inductance. Typical speaker runs fall into that category. It is very important to minimize the cable resistance and minimize the total energy that the cable stores while performing it's job.
ugly: ""
Also the fact that silver has slightly better conductivity means it should pass more current for a given applied voltage.""
At audio frequencies, the load will define how much current the wire will be carrying.Cheers, John
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Follow Ups
- Anything under a Ghz, I use copper. - jneutron 16:37:42 01/24/07 (2)
- I agree. Silver is mostly overkill for this app. - Ugly 19:06:28 01/24/07 (1)
- Re: I agree. Silver is mostly overkill for this app. - jneutron 06:30:13 01/25/07 (0)
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