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Old 24th November 2002, 07:10 AM   #1
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Unhappy loudspeaker phase checker

dear all, i am looking for a schematic diagram of loudspeaker phase cecker, i dont know which web site that I can look into? Thanks!
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Old 27th November 2002, 03:08 AM   #2
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Umm, a 1.5volt "AA" battery?? Just repeating what I saw on a site...

"Figure 21 seems somewhat incongruous at first sight, but I used it to ensure that all speakers were properly phased. When a positive potential is applied to the plus (+) terminal of a speaker, it is meant to produce a positive pressure wave, so the cone should move outwards. This is readily seen even with 1.5V on any speaker, and the current is low enough that it will not damage the most sensitive tweeter. "
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