Am I crazy????? Try THIS

gmarcotte@...Do you know if each speaker had two chains going to the ceiling or more. This would make the difference.

line, yes each speaker hangs to this day with 2 seperate chains.

Line...You need two chains to avoid the speaker pointing in different directions. If you use three chains, it can't swing either.

Well...i have to tell you; you had me doubting my memory, so i call my friend that was with me at the time when we seen the 901's and he remembers the same thing. It surprised us both and we looked at each other. He recalls the music; it was used in the movie Close Incounters of the Third Kind, where there is silence and then a powerful VAAROMMM. This made them move about 1/2" or so. They were hanging high, maybe 2ft. from the ceiling and 2ft. from the side wall and back wall. I attest, they moved.

Didn't Newton say that "for every action there is a reaction"? The issue isn't whether or not something moves, however imperceptively, its whether or not the movement makes a difference, sonically speaking. IMHO any differences caused by tiny movements would be swamped by other issues such a reverb in the room from the loud sounds which would be the result of the woofer cones excursions needed to cause the substative movement in the first place, etc. All the pro's and con's on these issues makes for some interesting speculation and a lot of testimonials, but beyond the issues of proper isolation from other surfaces, I really think they have little merit in the real world! Now hows that for a pile of crap!