What speakers use SEAS or SEAS-sourced drivers?

There out of business. But the Hales Trancendance 5 uses the Seas Magnesium midbase driver. Here's a pic of them. http://cgi.audiogon.com/cgi-bin/cl.pl?ddspkrfull&1075005205&demo&3&4&

Also my friend has these speakers called Fischer and Fischer. There high end speakers from Germany. They use the Seas Magnesium midbase along with the Dynaudio Esotar tweeter and Scanspeak woofers on the side. Here's a pic of his speakers. He's in NYC. http://www.fischer-fischer.de/start.html
When your on the site, click on Fischer and Fischer on the right side.
Then on the left side you'll see the model numbers of the speakers. He has the SL 550 speakers. Here's a really good pic of the SL 1000 speakers. When your on the site, there the 9th pic from the top. These speakers look incredible. http://shows.soundstagelive.com/shows/avtour2000/frk_03daily.shtm

The Seas 5" midranges are EXTREMELY smooth for the money, but have a rising response that's difficult to tame, so often have a nasal quality. I worked quite hard trying to eliminate this 600Hz to 1k lift in a 3 way design a few years ago, but never found as much success as with their 6.5" that sacrifice smoothness but sound more neutral and open. SEAS is famous for great value with very high QA. Nonetheless, at a certain point I just prefer the Scanspeak, custon Dynaudio, or of course exotic ART (Skaaning) drivers.

Please include the Audes Line.Made in Estonia, by hand, the finish is breath taking. But the real value here is the smooth sound,open and detailed, more like a planer then a box speaker. Very tight bass also included. At this price point, with the seas drivers, real wood finish, and sound of 5k speakers, makes this a steal IMO. Brouch

Siegfried Linkwitz's open-baffle Orions use an Excel Millenium tweeter and Excel W22EX001 as a midrange. Bass duties are handled by a pair of 10" Peerless XLS drivers (Q=.5, anechoic F6 of 20Hz, no room gain).

http://www.linkwitzlab.com

They're wonderful in all ways.

If you can accomodate the space (4' to the front wall is good), amplification(6 or 8 channels - running the woofers in parallel gives you a 2.5 Ohm minimum impedance), need for subwoofers in the last octave if used for home theater, and price ($6500 + $380 shipping assembled with ATI amplification, $5300 + $380 without, and $2000 DIY you provide your own amp) you should definately find a pair to audition.

The Penaudio line uses customize Saes drivers including the Excel line.