I have a 12" Infinity Perfect with 500 watts pumping it but it makes the whole car shake like a Hawian dancer. I'm thinking of dynomating the whole trunk but it doesn't seem to do anything...Right??

 

I've heard a car my buddy was installing some subs in at a local Circuit City and there was a difference before and after.

I heard that Brax just came out with some puddy stuff and dries and is suppose to be awesome...have heard of any reviews on it though.

 

Any type of Sound deadener...like Dynamat will

increase SPL (how loud your stereo plays)

decrease rattles and vibrations

decrease road, engine, and exhaust noises