I was looking at the dimensions in Amazon as I don’t know them in particular. I do have the miccas’ and they are very small, but I find them usually have trouble handling bass when near a wall. They also are very inefficient so you may need quite a lot of power.
Another small option way off your budget and powered would be the Vanatoo T0. I believe they’re the smallest ones I heard about it, but they are not passive and their appearance are kinda polarizing.