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Post subject: 22.6 Ohms reading ?!?
Posted: Thu Oct 10, 2013 4:40 am
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Just measured impedance on a set of reconed 12" speakers.


:oops:

:?: :?:


Last edited by Nikola Tesla on Mon Apr 21, 2014 2:49 pm, edited 1 time in total.

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Post subject: Re: 22.6 Ohms reading ?!?
Posted: Thu Oct 10, 2013 9:19 am
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What does the marking on the speakers say?


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Post subject: Re: 22.6 Ohms reading ?!?
Posted: Thu Oct 10, 2013 2:12 pm
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8 Ohms,


Last edited by Nikola Tesla on Mon Apr 21, 2014 2:49 pm, edited 1 time in total.

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Post subject: Re: 22.6 Ohms reading ?!?
Posted: Thu Oct 10, 2013 2:41 pm
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Must be Australian ohms.

:lol:

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Post subject: Re: 22.6 Ohms reading ?!?
Posted: Thu Oct 10, 2013 3:10 pm
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Looks like something happened to the voice coil to make its inductance increase causing a higher impedance. I wouldnt use this speaker, too restricted it will run the OT hot.


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Post subject: Re: 22.6 Ohms reading ?!?
Posted: Thu Oct 10, 2013 3:54 pm
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Retroverbial wrote:
Must be Australian ohms.

:lol:

Arjay





:lol:


Last edited by Nikola Tesla on Mon Apr 21, 2014 2:49 pm, edited 1 time in total.

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Post subject: Re: 22.6 Ohms reading ?!?
Posted: Thu Oct 10, 2013 4:00 pm
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Yah but it was made in America by a bunch of Ausie Rules football fanatics and those fans do everything to excess including impedance and beer drinking.

OK, mostly the beer drinking but still ....

:wink:

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Last edited by BMW-KTM on Thu Oct 10, 2013 4:01 pm, edited 1 time in total.

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Post subject: Re: 22.6 Ohms reading ?!?
Posted: Thu Oct 10, 2013 4:01 pm
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JBL was an American company.

They moved offshore decades ago.

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Post subject: Re: 22.6 Ohms reading ?!?
Posted: Thu Oct 10, 2013 5:00 pm
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WTH?


Last edited by Nikola Tesla on Mon Apr 21, 2014 2:47 pm, edited 1 time in total.

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Post subject: Re: 22.6 Ohms reading ?!?
Posted: Thu Oct 10, 2013 5:11 pm
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Does it fluctuate on the other speaker too?


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Post subject: Re: 22.6 Ohms reading ?!?
Posted: Thu Oct 10, 2013 5:14 pm
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/


Last edited by Nikola Tesla on Mon Apr 21, 2014 2:51 pm, edited 2 times in total.

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Post subject: Re: 22.6 Ohms reading ?!?
Posted: Thu Oct 10, 2013 5:34 pm
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Strange, impedance increases as heat rises in a voice coil. Not sure how much a factor this would be though, has the speaker been moved, was there a change in temperature?


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Post subject: Re: 22.6 Ohms reading ?!?
Posted: Thu Oct 10, 2013 5:40 pm
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/


Last edited by Nikola Tesla on Mon Apr 21, 2014 2:50 pm, edited 1 time in total.

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Post subject: Re: 22.6 Ohms reading ?!?
Posted: Thu Oct 10, 2013 5:44 pm
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Yea, not sure, just throwing crazy theory out there. Actually, with a name like Nikola Tesla, you should be an expert in electrical engineering :)


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Post subject: Re: 22.6 Ohms reading ?!?
Posted: Thu Oct 10, 2013 6:38 pm
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Bad meter (or bad test leads) would be my "WAG".

Something definitely doesn't add up there.

Arjay

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