Andrew, I hate to tell you this but, even if you were to hang those speakers from the ceiling the bass would still pound the people below. Maybe a little less but not much. I lived in an apartment building for years and even with concrete floors I got complaints from the people all around me. The solution to your problem is to get yourself out of apartments.
Isolating Transmission Line speakers from floor
Gday, I have a set of Australian made Transmission Line speakers(as pictured) I live in a rental with floorboards, looking for a way to isolate them. Can anyone offer any suggestions?May also be needed for another rental in the future, which may have a concrete slab....
Cheers Andrew