Hi All, I have a pair of JBL 4530 scoops with JBL 2225 drivers as bass bins in my main system. I think the bass should be a bit tighter. They sound looser than the ones from my memory. In the first back chamber is lined with semi-hard batting and that is all. If I add stuffing, will that tighten the sound up a bit? There also seems to be a 3 to 5db dip in the upper drum region. Will stuffing bring that up? Thanks in advance.