Noob with questions as usual

jwhitlwa · 11th January 2012, 11:25 PM

Okay, so I'm just figuring out this whole thing. I've started by trying to figure our crossovers.

My first question is this: If a crossover requires a 1.00 mH - 0163mm (#14AWG), is the "0163mm" part relevant? What does it mean? Will any audio grade 1.00 mH air core inductor work?

Sorry for being so damn ignorant.

woof · 12th January 2012, 12:58 AM

Based on the gauge of the wire, inductors have different resistances that designers take into account when developing a crossover. The "thicker" the wire, the less resistance it should have.

benb · 12th January 2012, 01:25 AM

It appears the 0163mm is the wire diameter measurement equivalent to 14 gauge (AWG) wire. From the table here:
American wire gauge - Wikipedia, the free encyclopedia
14 gauge is 1.628mm in diameter. I don't know why it's "0163" instead of 1.63.

jwhitlwa · 12th January 2012, 02:47 AM

Thanks. Great link.

It is weird that it appears to have the wrong mm specification for #14 AWG.

So I assume that a copper foil 1.00 mH inductor (even if its #14 AWG) would not work since the resistance would be different? Or is copper foil supposed to be the same if it has the same AWG rating?

Fun fun fun

woof · 12th January 2012, 03:10 AM

Unfortunately, manufacturer differences result in different DCR's, even for the same gauge. If you are designing your own crossovers, you have to use the resistance of the inductors you have, or are planning to purchase. If you are building someone else's design, they usually specify the DCR used. If it's not significant to the design, they sometimes just specify the gauge - it will be close enough.

12th January 2012, 02:47 AM	#4
jwhitlwa diyAudio Member Join Date: Jan 2012 Location: Davis, CA	Thanks Thanks. Great link. It is weird that it appears to have the wrong mm specification for #14 AWG. So I assume that a copper foil 1.00 mH inductor (even if its #14 AWG) would not work since the resistance would be different? Or is copper foil supposed to be the same if it has the same AWG rating? Fun fun fun

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11th January 2012, 11:25 PM	#1
jwhitlwa diyAudio Member Join Date: Jan 2012 Location: Davis, CA	Noob with questions as usual Okay, so I'm just figuring out this whole thing. I've started by trying to figure our crossovers. My first question is this: If a crossover requires a 1.00 mH - 0163mm (#14AWG), is the "0163mm" part relevant? What does it mean? Will any audio grade 1.00 mH air core inductor work? Sorry for being so damn ignorant.

12th January 2012, 12:58 AM	#2
woof diyAudio Member Join Date: Feb 2007 Location: Irving, TX	Based on the gauge of the wire, inductors have different resistances that designers take into account when developing a crossover. The "thicker" the wire, the less resistance it should have.

12th January 2012, 01:25 AM	#3
benb diyAudio Member Join Date: Apr 2010	It appears the 0163mm is the wire diameter measurement equivalent to 14 gauge (AWG) wire. From the table here: American wire gauge - Wikipedia, the free encyclopedia 14 gauge is 1.628mm in diameter. I don't know why it's "0163" instead of 1.63.

12th January 2012, 03:10 AM	#5
woof diyAudio Member Join Date: Feb 2007 Location: Irving, TX	Unfortunately, manufacturer differences result in different DCR's, even for the same gauge. If you are designing your own crossovers, you have to use the resistance of the inductors you have, or are planning to purchase. If you are building someone else's design, they usually specify the DCR used. If it's not significant to the design, they sometimes just specify the gauge - it will be close enough.

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