Rep Power: 401

with everyone saying how good fatmat was, i bought 100sq. ft. and installed about half of it in the trunk (2 layers) and turned up my stero and it sounded exaclty the same! i thought it was supposed to increase your dB level!? it did however make the trunk rattle less by up to 90% you can only hear it when the stero is way up beyond the volume i listen to, so i am happy about that. i'll be installing the rest in the doors tomorrow, maybe 3 layers if theres enough, think that will help the stero sound louder? what exactly makes it help the stero sound louder, by reducing rattles and road noise?

 
Rep Power: 0

it doesnt actually go up in volume in all applications. it mainly goes up in volume when youre dealing with a serious volume where your panels in your car are flexing from teh sound pressure.

 
Rep Power: 346

I noticed a difference in SQ with the doors and not really the trunk...but I do think it helped my trunk be less noisy.

 
Rep Power: 0

I fatmatted my whole trunk one time and the trunk lid twice and I hear a difference. **** still rattles in my trunk, but my JL 12w3 hits hard.