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
4 Bose 901's hanging from ceiling on chains! One in each corner of room! Incredible!
Just curious, has anyone ever tried stacking Bose 901s?
I'm curious if anyone has ever added a super tweeter...with mini DSP and high passed to a couple subs, I bet these would go from fun to serious hifi. 
I never shared the general disdain of other Audiopiles towards 901's.
I heard a pr once that was turned backwards so most drivers were pointed toward you and the single driver to wall  that sounded good .
I think they  have had some other slight mod but I disremeber what .
I had a Bose System in Nissan Maxima that used 901 drivers, sounded damn good .
Sherbet
I never shared the general disdain of other Audiopiles towards 901's.
I heard a pr once that was turned backwards so most drivers were pointed toward you and the single driver to wall that sounded good .
I think they have had some other slight mod but I disremeber what .
I had a Bose System in Nissan Maxima that used 901 drivers, sounded damn good.

Just wondering, could the slight mod have been that the speakers were not attached to the cables?