Hey bandphan, Good Morning.
Well, you like ICE, I like FIRE.
They are ATF (Advanced Thin Film); not Ribbon, not Electrostatics (but based on them), not Dome, not Cone, not Dipole Film base, not Textile, not Diamond, not Gold, not Aluminum, not Titanium, not Plutonium, not ...
They're just not your typical type of tweeters, they are ATF with electromagnetic pulse.
* And the frequencies that they handle, the class D amps (ICE included), will not do them full justice; just like I said in my original post. Because, these tweeters are very revelationary, and extremely detailed in the higher frequencies, where the Pioneer Elite receivers, and most class D amplifiers fail to fully resolve those higher frequencies, and where they lack that last minute detail.
I'm not making that up, I just did some extensive research, before I commit to post my analysed and carefully examinated results.
You have a great day Scott,
Bob