Because of their design and height getting the stands the right height is going to be the awkward part.
The stands top-plate does not have to be as large as the speaker dimensions.
Not being in the States I wouldn't know what was recommended in the day, perhaps asking a dealer that actually sold them might prove useful.
Sorry, the JBL threw me as you don't get that many outside the States.Didn't buy them from a dealer but I suppose I could ask other JBL Synthesis dealers. I live in France and I have tried to look in online shops all over Europe but I haven't found anything yet.