Acapella ion tweeters


Does anyone know about Acapella ion tweeters (specifically the TW1S)? I would be interested to know about the following:
1) If you have any experience with them, are they really the best out there? Are there are other tweeters which can match their speed? Are there others with similar technology?
2) Did they have ozone problems at one point or do/did all extant versions of the TW1S have it licked?
3) Are they now available separately? I remember reading in a post many moons ago that they only came as part of their speakers (I believe the mysterious Detlof was the author) but the website has a separate listing for them. And if available separately, does anyone a) have ANY idea what they might cost? and b) who in the US or Europe (or even better, Asia) might sell them?
Thanks, Travis
t_bone
Travis: Detlof uses these, separately. From my experience: Ozone problems have been licked. The tweets are VERY fast. Don't know how easy they are to purchase separately as I heard them as part of the speaker (but Detlof does, obviously).

BTW, Detlof is far more knowledgeable than he is mysterious ;) -- if he doesn't catch on to yr thread, why not mail him directly?
I remember reading somewhere that they were, at least at one time, avalailable separately. I think that the price was about $10k for the pair of tweeters.
i've heard the campaniles at fcrowder's place. of all the speakers i've heard, i've never been as impressed with anything as i was with that tweeter. its remarkable.
T bone
Question 1: A clear yes. There is nothing better, more transparent, more dissolving, less coloured.
Question 2: Have them for over two years and am still alive and well. They never had ozone problems right from the beginning, it being broken down and converted inside the system.
Question 3: Yes, IF you have the right connections. They are not marketed separately.
If you are seriously interested, drop me a line and I will see what I can do.
GREG: I wouldn't know about knowledgeable, but I LOVE being mysterious.(-;
Thanks to all for quick feedback/answers, especially to the "mysterious" :~) Detlof. I have never heard anything but superlatives used to describe the tweeters (and for that matter the speakers they are usually housed in).

Greg: I am with you Greg, extremely knowledgeable - I am sure I am not alone in appreciating his wealth of knowledge and experience, and more importantly, his willingness to offer it. [:-)] The "mysterious" was an allusion to a previous poster's "mystical Detlof" - unfortunately I was asked to burp a baby before put in in a 'smiley' and found to my chagrin it had already been sent sans smilies. Got one from the baby though...
Detlof: Thanks for being so helpful, yet again. Your offer of assistance is very kind. I asked #3 in part because I am looking for a fair "valuation" as I have found a pair of "essentially unused" used TW1S for ~$2500 and am wondering if they are worth snapping up.

Another question: It is my understanding that they have their own amplifiers built in. Am I mistaken? If built in, how are they? and if not, what would one use to power them?

Thanks, Travis