Sub Rattling Problems

I have a 12' Alpine Type R in the back and it makes everything in my eclipse rattle, does anyone have any suggestions or a solution to this problem? I know a good amount of it is the hatch and rear view mirror, but i fugured im probably not the only one who has had this problem..... Also and good ideas on where to put some tweeters?

Dynomat will help greatly to absorb vibrations/rattles...

Yea, i was looking into it but i didnt know where the best place was to put it i haave never really worked with it before, but i think its more the trim and stuff, im not sure..... I had a friend that said dynomat was bullshit so i was just curious......

First: You need to turn the sub up to as loud as you would listen to it.
Second: Get in the back of the car and listen and see where the rattling is coming from. I'm sure its coming from lots of different places. Also touch each panel in the rear of the car to see whats vibrating. Also listen to it on the outside of the car to see whats vibrating on the outside.
Third: After you have figured out what is making the noises, fix it. If a plastic panel is rattling, take it out and apply dynamat damping map to the underside. It will work, I promise. Anything rattling that you can put dynamat on....do it. I done my whole trunk.

Ok sounds good..... any tweter ideas? i really dont want to cut into anything, but i really liked the tweeter effect in my grand am GT, any ideas on where to hide them?

oh yea, is it best to put the dynomat behind the pannels on the back side, or on the framing and metal behind the trim and stuff or what? I have just never dealt with dynomat before and i have never had this problem before. thanks!

oh yea, is it best to put the dynomat behind the pannels on the back side, or on the framing and metal behind the trim and stuff or what? I have just never dealt with dynomat before and i have never had this problem before. thanks!

I took out the whole rear interior and lined all the metal. Then I put the panels back in, and which ever ones needed it got took back out and lined too. Lining the trunk lid made a huge difference for me. So be sure you do the underside of your hatch.

ok so you are saying do the under side of the hatch and the back of the plastic pannels as well, wont that still rattle since the bass is still hitting the front of them? i may sound really stupid, but i dont mean to.....

No that will stop most of the rattling, if there is still some then fix accordingly. Its going to be your call on the tweeters, you could just screw them to the a pillars but thats not going to be a very clean install. You could get some flush mount ones and see what you can do with them.

Sounds good, i think the pillars would be a good idea.

I actually was playing around with my dash and i found these pieces on both sides that look like vents, but...they aren't...thought it could be a nice place for some hidden tweeters. Anyone know anything about this ever being done? They are on the very bottom of the dash, they are fairly large, i dont think you could miss them if you wanted too.....