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      03-30-2010, 05:01 PM   #84
Lee Rambler
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Drives: 07 e92 335 6mt, 04 e53 x5 4.4
Join Date: Mar 2007
Location: PA

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it is a fact that the mechanical properties of speakers changes (ie the suspension) after broken in- they loosen up. This is most apparent on woofers, and happens easiest with heavier travel (ie lower bass at higher levels). "Burn in" may not be the best term, but speakers definitely loosen up. Different drivers take different amounts of time, and this could be done at the factory prior to shipping, though most are not... on alot of subwoofer drivers you can feel the difference of just moving the cone with your hand a few times.
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