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mines makes a loud noise behind A pillar...
Also when I put a 3000w amp and 12" RF P3 lots of rattles obviously...stuffed some insulation around the space over the trunk and anywhere I heard rattles....removed almost every trunk and rear seat panel (and rear seat) and used DEI Spray on sound/heat insulation....Now its sounds great....Still BMW is so solid, with seats up, you can barely hear sub...1 seat down and it is the loudest single subwoofer Ive heard no exxageration....
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2020 BSM X4///M-2016 BSM ///M2- 2011 668 ///M3 |