Yes and this was part of my concern, if the Dynamat would take away from the whole of the experience instead of improving it. The thing that prompted me to consider it was the fact that the cabinet gives of quite a bit of squeaking during playback both while the amp was removed, and when it is in place.

It was a very interesting experiment. If anyone else has ever done this its amazing to watch how a subwoofer works! Their travel is incredible, and they shake the entire box to the point that you are afraid it's going to simply fall apart under its own air pressure & violent movement! It also gives you an even better appreciation to all the skill involved in getting a high performance subwoofer tuned to the point that it disappears into the rest of your system. Simply amazing!

My Stuff :

M80's
QS8's
VP150
EP800
Denon 4802
Emotiva XPA-3
Samsung BD-P3600
Sharp 65 Inch Aquos LCD