Using subwoofer as center channel stand.

[js666]

OK, I did the coin on it's side and water test. There is some vibration on top of the cabinet. Played T:Salvation, the coin dropped in one of the louder scenes during the Harvester attack.
Is it reasonable to expect a little vibration? I just can't imagine the Dali sub having less vibrations than the JL Audio. I know the only way I'll really know is to just try it but it's a pain placing a 120 lb sub on and off the cones by myself.