I am curious--what drivers are you using? One of the main reasons I went active is being able to use really good drivers at a fraction of the cost of anything retail using same. As a for instance Bohlender Gruensfeld 60" ribbons, Scan Speak revelators midwoofers, Acoustic Elegance 15H, Audio Technology C-Quenze, various Satori drivers, Datyon Audio Reference Series of subwoofers, Aurum Cantus AMT's and ribbons etc. I never touched the diamond or ceramic stuff as that struck me as diminishing returns big time. Otherwise I look for "reasonably" priced outstanding drivers knowing that I don't have to worry about out of band resonances or reduced power handling near Fs. Chop it off he said about her head.