Hey,It looks like maybe you've figured out what to do with a problem I've been having. My front mid-woofer pods are causing major sound problems at certain bass frequencies... I thought about trying to dynamat the inside or the outside but it's a huge pain to get to them... I guess I could figure out how to take them out.
What did you end up doing with them? I've got polyfill in them to try to cut down on vibration, and it's ok at some frequencies.
Any advice would be much appreciated. Thanks