I screwed a phillips pan-head (rounded top) screw partially into the stand itself, leaving it sticking out enough that I could hang my speakers on the post via the keyhole opening on the back.

If you look at your speakers and see a “keyhole” opening on the back (it’ll look like a hole with a slot sticking out of the top of it, with room inside for a screw), you’ll be able to do the same. Otherwise, I’d look at building a small platform on top to set your speaker on.