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

Showing 2 responses by t_bone

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
Thanks to all for your advice. The story: when I went back to purchase the tweeters the day after my post, they had already been snapped up by someone else. Aargh! My interest has been piqued, however, so I will continue to look.
Thanks all, Travis