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Message: <blockquote data-quote="I Like Waffle" data-source="post: 7397464" data-attributes="member: 600248"><p>You should get some lead sheeting and also mount it to the roof, i filled part of my trunk with concrete to help lower the resonant frequency and it made a MAJOR difference in the low low notes. Adding mass to the floppy parts of a vehicle is always gonna lower the resonant frequency of the car, and help stop flex. Add some more weight to the roof while youre under there.</p></blockquote><p></p>

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