The best speaker you ever heard?


In my opinion, the speaker is by far the most important part of the audio system. After all, it is the only part you hear. OK, the other stuff really matters a lot, but without a great speaker... No go.

I am a bit 'speaker-obsessed' I guess, and now I am wondering: What are the best speakers you have ever heard, and what made them the best?
njonker
Salk HT3 by Jim Salk. Hand made 3-way with ribbon tweeter. crossover by Dennis Murphy.

gthomas
JMLab/Focal Utopia with the Be tweeters's (any of them depending on your room size). Most transparent speakers around, high sensitivity yet full range and great with most any high quality amp (particularly tubes in my experience). Several cosmetic options. Not cheap but worth it.
Ah..Pgulrich, before you claim the JMLabs with Be tweeters are the "most transparent speakers around", have you heard the various current electrostats (SoundLabs, Audiostatic, Innersound etc), ribbon speakers (Apogee Synergy, Analysis Audio), and horns (Acapella with the plasma tweeter, Avant garde)? I've heard most of these speakers, and transparency is not one of the standout features of JMLabs (Grand Utopia Be) in comparison.
Revel Salon's have to be the best speakers I have ever heard. Words cannot describe how unbelievable these speakers are. I think their only a mier $20,000 for a pair.