Ribbon speakers


Greetings

I'm looking for a great set of bookshelf speakers that use Ribbon tweeters.

What brand and models are good?

Thanks
mcgarick
I wish to add a late note to this discussion, because in 2016, many top bookshelf and many floorstanding speakers are using ribbons.  The modern version have tamed the electronic tweeter to make it desired in high end speakers.  On the lower end is HTD which uses ribbons in their top line.  I have the Swans M1 and the M1B that I built, and they have replaced all other speakers in my home, and always will.  I've sold some better Monitor Audio and Polk bookshelf speakers, and gave away some mid-priced Polk speakers I never used.  However, my main fronts on my surround system are Paradigm Monitor 11s because the size of the drivers do count for movies.
You might take a look at Newform Research.  A variety of ribbons in 15in, 30in and 45in lengths.  Unusual setup but work well.  I have owned two different pairs.  Imaging is and resolution is great.

Problem with ribbon tweeters is that the mid range unit needs to be very fast to keep up with them. I have yet to hear a two way that sounds coherent, because the mid/bass driver is always too slow.

So the ideal setup would be a 3 way that uses a very fast 3" or 4" small midrange unit, then the bass driver can be a good 6" or 8' or even 10" unit.

Cheers George