Really appreciate the in depth reply! So no screwing the panel in anywhere? I'll have to dig into them this weekend and take a look inside. Also, I compared the bass with the panel loose and with it tight (my hand holding it in) very very noticeable difference. More punchy when air is trying to escape. Dare I say the bass sounds better? In my opinion of course and without the rattle of the panel...leads to my next question. Why aren't the Heresy's ported? Maybe that is a stupid question but hey, I'm new to this!