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
Ok here we go again. The best speaker you ever heard is the first really good or distinct sounding speaker you heard in your youth. Your hearing was better and there will be nothing that sounds that good.
Not the best, but most memorable. In a dorm room, pair of KLH 17s driven by Dynaco st-70 playing Doors Hello I Love You.  Punchy juicy sound, probably colored with distortions.  But, boy, I loved it.
I listen mostly to classical music , Bach in the day (pundit ) the KLH 17's were as musical as any speaker you could buy period .
Tri amped Koss Model One
Infinity Reference System 
Big Snell speakers
Original Sound Lab