A lot of people spend a massive amount of time and money building their Car Audio Systems to get the perfect (perfection is really subjective though) sound only to find a new rattle when upgrading to bigger/better equipment. I personally have come across this issue myself in several cars I have owned, on some cars it was just a minor bit of road noise and slight number plate rattles but since my systems have gotten bigger the rattles grew and so did the annoyances of it! There are three main uses for Sound Deadening, these three uses are: Increasing Sound...