Using Goertz foil inductor AW12 got mid driver - diyAudio
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Old 9th July 2005, 09:15 PM   #1
andy2 is offline andy2  United States
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Default Using Goertz foil inductor AW12 got mid driver

Do you think these AW12 inductors are a little too much for a mid driver in a 3way system?

I am kind of concern of having too much capacitance on these foil inductor for a mid driver. For the base I wouldn't have any problem.
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Old 10th July 2005, 02:29 PM   #2
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its like .002 uF for the .68 mh ones i measured one at Active Surplus. that cant be that bad
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Old 10th July 2005, 07:40 PM   #3
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Quote:
Originally posted by Madmike2
its like .002 uF for the .68 mh ones i measured one at Active Surplus. that cant be that bad
Thanks. That makes me feel a lot better.
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Old 11th July 2005, 09:38 PM   #4
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Dont use foil inductors, try to use some nice 10AWG air core inductors (the thicker the better), foils cost more and only skew the capacitance which ISNT GOOD!
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Old 11th July 2005, 09:45 PM   #5
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do you mean that once inline they change capacitance ? How ?
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Old 12th July 2005, 12:19 AM   #6
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I phrased that wrong, i meant that the capacitance of foil inductors is higher than that of air-cores.
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Old 12th July 2005, 03:01 PM   #7
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Default Inductors

Quote:
Dont use foil inductors, try to use some nice 10AWG air core inductors (the thicker the better), foils cost more and only skew the capacitance which ISNT GOOD!
Actually the capacitance of the foil inductors is still so low that it is of no consequence. Pick a value and I'll tell you how much capacitance it has.

In many side by side A/B tests I concluded that the foil inductors clearly sounded better. It's a subjective assessment. Many agree and many can't tell a difference. Much may hinge on the quality of your system to allow discernment at this level. It is not huge by any means.

If you check current pricing you'll see that are not that much more than most wire wound types too.
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Old 12th July 2005, 04:56 PM   #8
gary f is offline gary f  Canada
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In Canada, Goertz inductors cost almost the same than solen standard air core.

Goertz 14 awg 1mH= 12.43 $ US at partconnexion
Solen 14 awg 1mH= 12,64$ US at solen


F
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Old 12th July 2005, 05:55 PM   #9
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Default Re: Inductors

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Originally posted by Danny


Actually the capacitance of the foil inductors is still so low that it is of no consequence. Pick a value and I'll tell you how much capacitance it has.

In many side by side A/B tests I concluded that the foil inductors clearly sounded better. It's a subjective assessment. Many agree and many can't tell a difference. Much may hinge on the quality of your system to allow discernment at this level. It is not huge by any means.

If you check current pricing you'll see that are not that much more than most wire wound types too.

If they are so much better and cost the same whay do the manufacturers continue to make inferior products?, Ive done a similar A/B blind test with 8 AWG air cores & foils running on my electra clones, Then switched at ramdom, not knowing whos who, one seemed much more pronoinced in the midrange tweeters roared and bass was good, Other seemed just as good on the tweeter but the midrange was noticably worse. In the end i checked and it was my hand wound aircores that performed better, i tested others people the same way and they all agreed with me, you cant say its bad amplification, as at the time of the test i drove them with monsterous Mark Levinson ML-2s borrowed form a freind who runs a local audio shop.
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Old 12th July 2005, 06:17 PM   #10
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Quote:
If they are so much better and cost the same whay do the manufacturers continue to make inferior products?,
Maybe you should ask those manufacturers that question. I for one would not be among them.

Quote:
Ive done a similar A/B blind test with 8 AWG air cores & foils running on my electra clones,
No one makes 8 gauge foil inductors that I know of. 12 gauge is the largest produced by Alpha Core.

You may have been noticing a difference due to lower DCR or just a difference that was one that you preferred, and not necessarily a better or worse scenario.

Bass response in particular will be up a little more in output due to the lower DCR, 8 gauge wire.

The comparisons that I have made have been more even comparisons.
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