An amp is not necessary but it will make a difference should you get it later in the future. replacing the speakers alone are a good way to start off.
As for the dynamat, just follow the directions and apply it directly to the sheetmetal. Applications on both the inner and outer door panel will make a huge difference as it will reduce the vibrations quite a bit.
As for the dynamat, just follow the directions and apply it directly to the sheetmetal. Applications on both the inner and outer door panel will make a huge difference as it will reduce the vibrations quite a bit.
