Not an expert here, but I would try to avoid mixing different Ohm sized speakers. 1 Ohm gap might be acceptable, e.g. 4Ohm/3Ohm or 2Ohm/3Ohm. And check your head unit. It normally shows, what ohm sized speakers it can power. The door speakers might be the culprit in your setup.
just my 2 cents...
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Original Owner | PORSCHE Boxster 2.7L (MY01) | Seal Gray
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