There's damping of a speaker's interior, like adding wool or fiberglass insulation. If judiciously done it really helps a speaker resolve itself and avoid ringing. If overdone it is readily audible as a lack of micro dynamics.
There's damping of a spekers internal cabinet walls to reduce cabinet vibrations, generally using Dynamat or automobile door daming materials. This can make much sense overall, but there's no replacement for a sturdy, thick, well braced cabinet to starty out with.
Then there's Black Hole 5, which effectively damps the cabinet walls while making the interior of the cabinet seem larger to the speaker, enhancing bass and mid-bass characteristics. However this too can be overdone.
Any or all of these might require an adjustment to the crossover to compensate for the different Q you will achieve, perhaps as easy as altering the tweeter resistor value, but it could need more tweaking. No way to know for sure unless you try it and listen.
There's damping of a spekers internal cabinet walls to reduce cabinet vibrations, generally using Dynamat or automobile door daming materials. This can make much sense overall, but there's no replacement for a sturdy, thick, well braced cabinet to starty out with.
Then there's Black Hole 5, which effectively damps the cabinet walls while making the interior of the cabinet seem larger to the speaker, enhancing bass and mid-bass characteristics. However this too can be overdone.
Any or all of these might require an adjustment to the crossover to compensate for the different Q you will achieve, perhaps as easy as altering the tweeter resistor value, but it could need more tweaking. No way to know for sure unless you try it and listen.