Acoustic Zen Adagio Floor-Standing Speakers Set-Up

I have owned a pair of Acoustic Zen Adagio Floor Standing Speakers for two years. They have been in 5 different rooms in 5 homes and apartments in that time (been downsized a lot!). No matter what I try, I cannot get ANY bass response at all. I have used the Cardas speaker setup instructions and every other article I could find on speaker set-up. I have tried several different preamp/power amp/integrated solid state and tube electronics from McIntosh, Jolida, etc. with absolutely no bass. I have 3 test cd's from Stereophile and a tripod mounted Radio Shack SPL meter. I have laser rangefingers, etc. I have moved bookcases, cd and lp racks, equipment racks, etc. until I am blue in the face. I only have one piece of furniture, a recliner--the bachelor's dream sound room. I have tried Acoustic zen, Audioquest, and Cardas interconnects and speaker cables. Nothing, absolutely nothing, produces even a hint of bass. The speakers are connected in phase of course. I don't believe the speakers are damaged as they image well almost any where I place them, and the sound stage is very 3D. Can anyone offer a serious suggestion? I don't need any jokers at this point in my life please.

Thanks, Alwaysbroke