Roland68
Major Contributor
You can also do it differently. On one side you put the Carina directly on the table, on the other side on the isoacustics stand.Thanks for getting back with suggestions! I am not sure I am tracking though- what do you mean by "Temporarily place a speaker on 4 similarly high pipe sections, aluminum, brass or similar, and see if it behaves in the same way."
I don't have pipe available to do this
Then get some board (cutting board or something similar) of the right size and place it between the isoacustics stand and the speaker. Then you can hear what's happening.