Has anyone actually physically checked to see any vibration in their speakers with no music playing and with music playing before using the podiums?
Well, I never checked vibration in my speakers with no music playing, because I didn’t see where that would be useful, however I did measure vibration with music playing before and after installing Townshend podiums (and Gaia footers).
I used the Vibration Analysis app for iPhone. There are several similar apps available.