Goldmund Dialogue

Two set's Dialogue's witch I have for a copple of years now, still a great speaker!
I have 1 set Goldmund Dialogue’s, the Filter is insulated, internal Cable is Leedh, I think its standard.
This set sounds a little thin and very clean.
And 1 set is modified, Filter is open, Cable (conducters) are Monster Special, and Bi-wire conects.
This set, suprise me the Bi-wire, because of the very complex filter...
The sound is more around, and more body/mid-bass, less thinny
Have anybody experiends whit some mods on this beautiful Speakers?
What mods is very good ? Other conductors, speaker-cable to Amp?