In-door applications

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sirogenous
sirogenous Posts: 57
edited July 2001 in Car Audio & Electronics
I realize that car doors don't have very good accoutical qualities as speaker encloserures. However, what can one do to improve the performance of door mounted 6510's in a 93' nissan truck. Is there anyway to tune the encloser other then preventing rattling door parts. Such as spraying undercoating inside the doors to increase their density a little bit perhaps or adding a tune port or ?
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