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<blockquote data-quote="brian84corvette" data-source="post: 8333172" data-attributes="member: 586635">i use a 9v battery to test every speaker and sub i have when instaling it to varify that each terminal is labeled properly...&nbsp; that 1 in 500 chance its wrong is worth testing for.&nbsp; &nbsp;&nbsp; touch the + of the 9v battery to the + on the speaker terminal and same for the - of both.&nbsp; &nbsp; the speaker should push out of the basket.&nbsp; &nbsp; only do this for a quick split second.&nbsp;&nbsp; dont sit there with 9v battery powering your speaker to push out for any leingth of time....&nbsp;&nbsp; will cause harm.&nbsp;&nbsp; if you flip the battery and touch - to + the speaker cone should pull in&nbsp; its eazy peazy even a cave man could do it.butclearly its an un denyable way to see if your termials are labeled properly - and that multiple sub setups are all in phase with eachother....dont want one sub pushing in while the others are pushing out.</blockquote>

[QUOTE="brian84corvette, post: 8333172, member: 586635"] i use a 9v battery to test every speaker and sub i have when instaling it to varify that each terminal is labeled properly... that 1 in 500 chance its wrong is worth testing for. touch the + of the 9v battery to the + on the speaker terminal and same for the - of both. the speaker should push out of the basket. only do this for a quick split second. dont sit there with 9v battery powering your speaker to push out for any leingth of time.... will cause harm. if you flip the battery and touch - to + the speaker cone should pull in its eazy peazy even a cave man could do it. but clearly its an un denyable way to see if your termials are labeled properly - and that multiple sub setups are all in phase with eachother.... dont want one sub pushing in while the others are pushing out. [/QUOTE]

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