i recently purchased a 12 in kicker l5 but the trunk raddles like no other on most of my songs where does the rattle come from and how can i fix it. it stops when i apply pressure to the trunk.

 

you can try tightening the rubber stoppers on the trunk down, but you really need to dampen your trunk and make it more solid, I used dynamat on my trunk lid, trunk seams, and rear deck, and even my license plate, I have no rattles, except from my spoiler because it cracked from the vibrations for the second time in a row

 

x2 on the dynamat

 

x3 on dynamat

 

There's other alternatives besides Dynamat (expensive) edead, B-Quiet. I experimented with roofing material from Home Depot called Icegard, ($30 fora whole roll that will do way more than your trunk)and it worked great. It just needed time for the odor to dissipate. (about a week)

 

Just a tip.. For spoilers take out the third brake light out then stuff the spoiler with polyfill as much as you can. Will help reduce some of the rattle in the spoiler.

 

Like others said, there's alternatives to Dynamat. Some of the best stuff out there right now is Second Skin Damplifier Pro. However, it's up near the cost of Dynamat, if not a bit more. It's well worth it, but still pretty expensive. If you're on a budget, Raamat is probably your best option. If you don't mind using 5-6 layers of it, the peel and seal from Home Depot/Lowes/etc will work, but it's going to take a shit ton more. Just know that going in.

 

Yeah I did the stuff from Home Depot. $16 bucks a roll 6"x30'. Worked great!