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Old 25th August 2004, 07:56 PM   #1
sberube is offline sberube  United States
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Default driver polarity

Hi everyone, I have a question that might seem dumb, but I'm putting together my first DIY project, and I can't quite figure out my driver's polarity, which is + and which is - ?!? I don't want to power them with the wrong polarity... Can someone help me with this?

Thanks.
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Old 25th August 2004, 08:16 PM   #2
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Default Speaker polarity

Place a small torch battery, AA size 1.5v will do, across the 2 terminals of the speaker for a second or two. With the + terminal of the battery on the + terminal of the speaker, the speaker cone will move forward. With the + battery terminal on the - terminal speaker, the cone will move inward.
(Also a quick test to see if a speaker is blown )
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Old 25th August 2004, 08:23 PM   #3
GM is offline GM  United States
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Touch a 1.5v battery to it, whichever connection pushes the cone forward is the correct one.

GM
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Old 26th August 2004, 12:01 AM   #4
sberube is offline sberube  United States
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phew 9 volt was alot Geez, I think I must have went all the way to x-max.

Thanks guys. I'll keep a 1.5v handy next time
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