Here's another tip I learned: Accord door panels are real shaky after you dismount em and installing more powerful speakers guarantees some rattling, especially from the driver's door. My solution was to inflate baloons (small water balloon size if you have em) to about 1" wide and tape em to the interior of the door panel at the 3 or 4 spots where contact most likely occurs. Water balloons are perfect for this since they're designed to expand way past their size so you can compress them between the panel and frame and they won't pop. Cheaper than dynamat and just as effective
