Improvement for a good fit
Not bad, but you need a 17 gauge socket with an extension to tighten them up properly as it is not possible to do this by hand...
I fixed some R-41 M from klipsch (3,2 kg) on the top of the walls, well tightened it doesn't stay in the given axis ! obviously the parts (half-sphere) are smooth so they slide Pfff, the solution....
A good blow of sandpaper (grain 80) on the half-sphere which is fixed has the enclosure and the turn is played.
I've been using it for a while now, but it's a good idea to keep it up to date with the latest developments.