Here I am visiting this thought as my work progresses.
My 6x9'* hit full excursion (not sub''d yet) and I'm just
after some tightning up of the driver'*. But I'm adding
in a box as well and dont want this to happen to me!
I have some acoustic "egg carton" style foam I used
behind my home speakers (stuffed in a corner) to kill
the really deep boom. Worked great there....
So my current plan is to bend up some ABS to add a
little depth and pack the foam in there then somehow
mount it up.
What about the foam baffles used for behind the
doors for moisture protection? thats another thought.
Getting really good audio in these cars is harder than
I had anticipated!
Update: Not enough room to make up anything since the 2k B'Ville
has a torsion bar that comes very close to the speaker.
Ended up using peel-n-seal to the back of the basket
and it tightn'd up the drivers fairly well....