I saw link here (or on another forum) about using the Dynamat speaker kit. From what I remember it shows once you put it in place a cross should be cut at the speaker opening. Then you put in the speakers and the Dynamat sheet will cover up the speakers nicely at the back but still leave gap space for the speakers to vent.

Someone still has that link? And is this a good idea?

 

Nevermind...I found it right after I post this. Been trying to find it for days!