Speaker upgrade - 2015 Mazda3 GS non-Bose 6 speaker system | 2004 to 2020 Mazda 3 Forum and Mazdaspeed 3 Forums
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TUTORIAL: How to fix / repair Bose speakers (buzzing / rattle) Mazda 3, 6, CX-5, CX-3, MX-5, CX-7 - YouTube
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