My brothers m60ti have 4 fins surrounding the tweeters. So no half incher there. We will try amplification change next to see if that softens things a bit. Again, it’s a distortion and breakup issue at higher volumes, we are not trying to make them sound “less bright” but just want them to handle a reasonable volume without the breakup, as I know they can handle it, evidenced by my own tweeters m60ti.

Maybe it is the ferro fluid reaching its lifespan….we ll see.

M60ti Hafler9505 & JFET Pre,Axiom Transformer. M3 Marantz PM7200 Dual 606 Denon 2700 M2 Yammy RX595