Excellent ribbon tweeters. I built up a kit from Creative Sound Solutions when Bob still ran it. These are ribbon tweeters from the 1TR kit. Used for about 3 months as I built up a set of single driver speakers.
Mine show marks from mounting and one has a mild scratch on the face - hard to capture in a pic. No way anyone can see it from 3+ feet away. Never soldered, I used ring terminals on the end of the wire.
I have the pdf of the full specs.
Currently on sale at Parts Express for USD$100 each, plus shipping.
USD$125 for the pair shipped anywhere in North America.



