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      05-26-2018, 10:43 AM   #46
Billfitz
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Drives: '15 328iX GT
Join Date: Jan 2015
Location: New Hampshire

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I believe they're 4 ohms. But as I've said, there's only one way to know how any driver will work, that's by using speaker modeling software to compare the results of the original drivers versus potential replacements. That necessitates having the driver Theile-Small specs, which I've not been able to find for the stock drivers. I've also expressed my opinion that no matter what amp and driver you use the size of the under seat enclosures are a major limiting factor. If you want/need significantly better bass than stock a separate amp and trunk mounted sub is the most logical, and probably economical, way to get it.
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