Yes it is a ribbon. All honesty, I would think it would not have the horsepower to keep up. I can think of some other ribbons that would but those will never be an option. I would go with the Beyma TPL-200 if I really wanted a ribbon/AMT. But I know the Raal has just a touch more sparkle above 10Khz and above. BUT I will have to listen to the 402 before I say I need anything else.
My experience so far is that on the highs on normal spl levels in a room I have never heard a CD that sounds as good as the AMT's or ribbon tweeters. BUT there are not many ribbons that are used for pro audio unless they are large and that would become a problem with directivity matching. The Raal supposedly can take 200w which in theory would be plenty loud for a tweeter. BUT the Beyma TPL can take a lot more abuse from my experience. But again I am only curious. I know that some of the Khorn upgrades have a Beyma supertweeter so I was only curious on that area of improvement. I know JBL does this on some of their larger 3/4way designs also but I have not heard them.
So again just ideas. For the most part I am going to build a straight dual 15 horn possibly(JWC please ) or straight dual 12 design. JWC's Then add a EV horn for the top. Will have to wait some time to save for the 402. I will more than likely be very happy with the final combo. I just know that when I changed the mains in my living room I was amazed the difference in sound when I went from ribbon/amt's back to CD. And while that was shocking the one thing I REALLY miss are the dynamics you get fom these straight horn designs. Its been a long journey with very little money. So I am tryng to learn as much as I can and hopefully get what I want in a system in the end.
Just looked at some PM's I have that were from 2010. I remember writing those PM's and it felt like a year ago. So this year I am finally going to make some saw dust. And hopefully my dual 21 FLH will be able o keep up with the mains.