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Message: <blockquote data-quote="TheRealSpinner" data-source="post: 8521177" data-attributes="member: 670870"><p>I always just use a battery.  Usually a 9v battery, but a AA battery should work (just harder to see/feel).  Like everybody else said, doesn't matter + and -, as long as they are all the same.  Touch one speaker lead to the + end of the battery, and the other lead to the - end of the battery.  The speaker will push out, or pull in.  I usually set it so that the speaker pushes out, and I label the lead attached to the +.  Do this for all the speakers, and they'll all be in phase.</p></blockquote><p></p>

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