Thanks for hanging in there with me on this, Wayne. Spent idle time time today going back-and-forth between tweeter upgrades for the L100s or else replacing with L112s, and figuring I need to build some horn-loaded speakers becasue I'm never going to be happy with these monitors.Stuffing/damping shouldn't pose much of a problem... I am going to take a look at Martin King's spreadsheet as you suggested.
Maybe this is a no-no, but what about putting an l-pad on the horn, in concert with the 2206?