Originally Posted by
grumpy
Dome doesn't need support, so yeah.
Factory foam piece actually took some -crushing- to get the 044 dome/fiberboard/assy
to sit flush against the magnet assy again... so there's definitely some damping going
on while the foam is still new-ish. I'd just err on the side of 'squishy' vs firm when
trying non-stock foam bits. pic in that thread shows what the stock foam cylinder
from a D8R044 (?) kit looked like (taller than I would have guessed, and it cleared
the side walls of the voice coil former). Definitely touching, in any case... seem to
recall it taking ~1/4" or more of 'squish'.
Someone could go nuts and do impulse, fr, and waterfall plots before/after/with/without
/etc... but I personally haven't the materials in hand.