I had been meaning to play around with the quantity of polyfill stuffing in the X-LS Encore since the filling was done purely on guesstimate and no real logic was employed other than the fact that the quantity was just sufficient to fill up the available space - not loosely filled, not tightly filled.
The sound with this quantity of stuffing was pleasing enough to my ears. However, I don't know if it's the optimal quantity. So out came the toolkit and the screws of the woofers came off.
As a starting point, I removed all the stuffing, put back the screws and sat down to listen. Mine uses the NoRez foam from Danny. The character of the mids and highs didn't change too noticeably but the bass suddenly gained a bloat that wasn't there before, especially in mid bass.
Joshua, how long did the drivers break-in? From whatever I have read, seems like
it is good to start tweaking the stuffing only after about 100 hours or so of playing,
after the drivers have been sufficiently broken-in.