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Old 02-12-2002, 12:06 AM   #1
Miracle Worker
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Question How can you tell if speakers are wired up backwards.

I was wondering if there is a easy way to tell if you have speakers wired up backwards (positive on negative) Can you tell with a voltmeter?
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Old 02-12-2002, 08:36 AM   #2
Johnysmoke
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I think as long as they are all wired the same way you should be all set. Not entirely certain though...
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Old 02-12-2002, 09:14 AM   #3
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Quote:
I think as long as they are all wired the same way you should be all set. Not entirely certain though...
ummm...no.

If they are all wired the same way, and they're all wrong, then it'll be easy to tell. You'll have pretty much no bass from the speakers. If you're still not sure after listening to them...reverse the polarity and try again...one way will sound much weaker and worse...and that is the wrong way
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Old 02-12-2002, 09:22 AM   #4
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If you take a regular battery and put the postivie end to one connector of the speaker and the negative end to the other side of the speaker the cone will move either up or down (doesn't matter which way, as long as all 4 go the same way). So as long as you know the polarity from the HU the rest is easy, if you don't find the manual online.
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Old 02-12-2002, 11:58 AM   #5
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Just to help clarify, he means a regular 9-volt battery that you use in a walkman or something, not a regular car battery!

Quote:
Originally posted by 6Pack
If you take a regular battery and put the postivie end to one connector of the speaker and the negative end to the other side of the speaker the cone will move either up or down (doesn't matter which way, as long as all 4 go the same way). So as long as you know the polarity from the HU the rest is easy, if you don't find the manual online.
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Old 02-12-2002, 01:28 PM   #6
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Quote:
Originally posted by Cjchaps
Just to help clarify, he means a regular 9-volt battery that you use in a walkman or something, not a regular car battery!
Yes.
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Old 02-12-2002, 02:24 PM   #7
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Default easy test

to test if you have speakers out of phase (hooked up wrong) just turn the radio up, and turn the bass up also. then adjust the balance from left to center to right. if the bass is louder when just one speaker (either left or right) than when both are playing you have one of the two out of phase. pick a speaker and switch the polarity.

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Old 02-12-2002, 10:02 PM   #8
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On smaller speakers use a AA.

Leave the 9 volt for the bigger woofers.
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Old 02-13-2002, 09:08 PM   #9
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or a competent car audio place should have a phase indicator tools... without having to rip the door panels off or anything...
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Old 02-13-2002, 10:37 PM   #10
RawCode
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Buy an IASCA auido test CD... it has an in phase outta phase test... give that a try...

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Old 02-13-2002, 11:48 PM   #11
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those last two ideas agre good. Now I don't have to pull off my door.
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Old 02-14-2002, 12:04 AM   #12
nhluhr
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if ALL the speakers are wired backwards, it might never sound its best, but if one is wired out of phase, the image will be like surround sound... sound will kind of come from everywhere and you'll have no centerpoint. Also, the bass will be really thin.
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