My door to the theater is an outside door and it rattles from the LFE in the room. It is already sealed. On a closet door I fixed this issue with electrical tape but that is visible and would not look good for the entrance. Is there a way to put anything behind the place it closes to near the hinges because that is where it rattles. Do you think I should just put the tape there? Is there a way to do it with another larger strip of rubber?

Is it a smooth finished solid core door? If not it may be the internal layers. It also could be the hardware (remove the knobs and see if it still rattles). Here is a site (http://www.soundproofing.org/infopages/soundproofing_doors.htm) with a little info on soundproofing doors.

Is it a smooth finished solid core door? If not it may be the internal layers. It also could be the hardware (remove the knobs and see if it still rattles). Here is a site (http://www.soundproofing.org/infopages/soundproofing_doors.htm) with a little info on soundproofing doors.

Yes it is a smooth finished sold core door. Now that I think of it it sounds more like the trim doing it. I will go back and double check it later. Thanks for the link.