I just finally used the T brackets to install a pair of QS8s as front height speakers been using stands up to now. I was quite impressed at how well the little unassuming bracket secured the speaker so tightly to the wall. I found that 4 screws with drywall anchors were enough to hold it in place. Since I use only bare wire (to lazy to terminate with anything else) it’s a non-issue.

3M80 2M22 6QS8 2M2 1EP500 Sony BDP-S590 Panny-7000 Onkyo-3007 Carada-134 Xbox Buttkicker AS-EQ1