Where to put sound deadener?

[Truconcept]

i noticed a huge difference after deadening my doors

[Omega5002]

I've used the old Audio-Technix 80 mil in my trunk, reardeck, and front doors, and it does a great job so far, a lot less rattling from the trunk, less noise from the reardeck, and slightly better clarity on the front doors.

I've heard the new version is even better than the old one.

[dog24fret]

Anywhere you can stick it IMO.

[Rmichael91]

Start with the trunk, trunk lid, rear deck, and doors. Then do the roof and floor. Just my view on it.