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Old 13th September 2005, 04:18 PM   #1
ChaS3 is offline ChaS3  United States
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Default audio inductors question

Has anyone ever used the SuperQ audio inductor from ERSE ?

I am looking to build my own crossovers and really like the specs and features of this coil, just interested if anyone has tried these or not, thanks.

- Cha S3
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Old 13th September 2005, 04:22 PM   #2
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You might get a better response over in loudspeakers section. Would you like me to move it?

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Old 13th September 2005, 04:44 PM   #3
Magura is offline Magura  Denmark
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If you take a closer look at those inductors, you will find that they are plain vanilla , relatively heavy gauge, steel core inductors, and actually of relatively low precision.

You could do a lot better winding you own air cores.

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Old 14th September 2005, 02:11 PM   #4
ChaS3 is offline ChaS3  United States
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But, wont an air core coil have a much higher DCR?

I am interested in the 5mH 14Ga SuperQ
I have linked to the DCR of the specific part.

14Ga 5mH Air Core Coil
I have linked to the DCR of the specific part.XQ

The XQ is the air core coil, the DCR is much higher.
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Old 14th September 2005, 02:30 PM   #5
Magura is offline Magura  Denmark
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Without going overboard in crazy gauge wire, you can make a 5mH air core that is around 0.25R DC

0.09R would not keep me awake at night

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Old 14th September 2005, 03:00 PM   #6
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Magura: But can you beat this:

Quote:
Electrical Conductivity: 101.5%
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Old 14th September 2005, 03:03 PM   #7
Magura is offline Magura  Denmark
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Quote:
Originally posted by Lars Clausen
Magura: But can you beat this:




I had a laugh about this one as well. According to the specs, this is to be categorized as a power supply, as it actually adds power

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Old 7th October 2005, 05:38 PM   #8
ChaS3 is offline ChaS3  United States
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Im sorry but I do not understand why you feel that the specifications of the SuperQ are specified as a power supply. Could you please be more clear or explain?

According to the ERSE website when you search for inductance versus dcr of their xq air core coils, a 5mH with that DCR would be a 10Ga wire, this would be a very large and expensive coil compared to the SuperQ.. right?

Thanks in advance.
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Old 11th October 2005, 08:15 PM   #9
Tweeker is offline Tweeker  United States
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Cross-Over Network; Air Core Inductor Calculator

Air cores have less hysteresis and will vaporize long before any saturation whatsoever. You can buy a 10lb spool of 12 gauge magnet wire off Ebay to make 2 5mH inductors for ~$30. .4 DCR. The elimination of the iron core and is easily worth the added resistance.
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Old 11th October 2005, 08:21 PM   #10
Tweeker is offline Tweeker  United States
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While silly the 101.5% conductivity claim isnt completely ridiculous, its referenced against the International Annealed Copper Scale (IACS) standard.
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