Are there speakers with cloth/soft enclosures instead of wood?


What does a soft enclosure sound like?
redwoodaudio
Yes there are and they are the best, IE, the most accurate speakers made.  Look up Magnepan and give your favorite model a tryout in your room.

Cheers!
Any fully open back speaker could qualify.  There are a lot:  Electrostatics, Maggies, Time Windows... yes they have wood frames, other wise they would droop and sag.  
Don't forget Vandersteen 4's. All you see is the top & bottom oak caps & that big black sock wrapping 95% of the speaker. 

I've seen pictures of the Vandy 4s sans sock. Very odd looking thing: a very strong central tower of various speaker enclosures (black MDF) attached at top & bottom.