18th August 2006, 17:22
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#81 (permalink)
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Super Moderator
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Join Date: 15th April 2006
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Quote:
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Originally Posted by Pottsy
When the positive of a preferably nearly flat 1.5v volt battery is very quickly applied to the positive connection on a speaker (by wizzing the wire for a fraction of a second on the speaker terminal), the cone will move outwards.
HTH
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