Originally posted by Dreamspawn
Bout how much SD does it take to do the hatch panels around hatch doors. I was thinking 40square feet should do the trick. Anybody done this?

Whats your main goal here? Just cutting down on vibrations to get cleaner bass? If that's the case 40sq. ft is over kill IMO. I don't know where people got it in their heads that they must cover everything with dynamat/or a similiar sound deadner. This is so far from the truth.

Hook everything up and bump the shit out of it. Then focus on the trouble areas and go from there.

On the exterior your license plate frame and the heat shield above the muffler will be the main culprits that will rattle like hell and sound like shit on the outside.

Interior wise, the snap clips on the panels tend to be the main trouble makers for rattles. little foam strips around the area where the snap clip snaps into tends to help. Also with our cars, generally speaking sound deadner applied to the back of the panel tends to be more effective compared to being applied to the metal of the car.

If your looking to queit road noise down from outside down so the interior is quieter overall then a sound barrier type foam installed under the carpet is also very effective.

All in all, it just really depends what exactly you are looking to achieve.