I hope no one minds me chiming in on this...
Remember that the speakers make the biggest difference when you're changing something in your stereo. The door speakers made the single biggest improvement over everything else I've done. It was worth it IMO to replace everything in my 2004 but the head unit (it's the basic 6 CD changer) and the rear deck speakers, but it's also all about how much time/money you want to put into your car. It's a hobby for me, so it was completely worth it...
And about the Dynamat...if you're using the self-stick stuff make sure you thoroughly clean the surface you will be applying it to with rubbing alcohol at the least and if you have something better, use that instead. You want the adhesive to have the best chance of sticking. Once that's done, simply stick the stuff where you want it and press it on. If you've got one of the rollers, use that, but if not the heel of your palm will work. One layer will make a big difference, but if it's not quite enough, just put on another and that should take care of it.
Remember that the speakers make the biggest difference when you're changing something in your stereo. The door speakers made the single biggest improvement over everything else I've done. It was worth it IMO to replace everything in my 2004 but the head unit (it's the basic 6 CD changer) and the rear deck speakers, but it's also all about how much time/money you want to put into your car. It's a hobby for me, so it was completely worth it...
And about the Dynamat...if you're using the self-stick stuff make sure you thoroughly clean the surface you will be applying it to with rubbing alcohol at the least and if you have something better, use that instead. You want the adhesive to have the best chance of sticking. Once that's done, simply stick the stuff where you want it and press it on. If you've got one of the rollers, use that, but if not the heel of your palm will work. One layer will make a big difference, but if it's not quite enough, just put on another and that should take care of it.