Sealed Loudspeakers?

What size, budget ? Spendor S3/5 and Harbeth and Stirling Broadcast LS3/5 derivatives are sealed.

Why are you excluding bass reflex designs ?

Small to medium floorstanders prefered.
no budget limitations.

I prefer acoustic suspension designs.

The two compainies that I know that still produce as speakers are Allison and Cambridge SoundWorks:

http://www.allisonacoustics.com/index.html

http://www.cambridgesoundworks.com/store/category.cgi?category=speakers

Regards,
Jerry

Most, if not all, NHT speakers are acoustic suspension.

Although NHT might not have as blue blood a high end pedigree as the speakers Seantaylor99 mentioned, they do have some claim to lineage from the Golden Age in the U.S. -- one of NHT's founder's, Ken Kantor, used to head R&D at Acoustic Research, the birthplace of the acoustic suspension design. (Granted, he was there about thirty years after AR first developed the design.)

I think NHTs do some things quite well and are reasonable values. Worth checking out.

Some of NHT's speakers are bass reflex such as the 2.5i's, the model 4's and some of their subs for example. Their big 3.3's and 2.9's were some of the better designs they created.
Vandersteen speakers are sealed designs except for the 1C which is a transmission line design. The 2Ce Sigs, 3A Sigs, Quatro's and 5A's are sealed designs with some interesting twists.
Most speakers now are ported but they're other sealed designs around. The Spendor suggestion is a good one.