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      02-08-2018, 12:07 PM   #11
ctuna
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Drives: 325xi 06 wagon MT
Join Date: Jan 2010
Location: Santa Cruz, Ca

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You could measure the speaker resistance at the Head Unit
connector. From after that is leaves the head Unit.
In the base system the floor speakers are wired in parallel
with the floors.

If you could somehow drive the speakers from another source other than the head unit it might tell you something.
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