While your experimenting ever thought of ceiling mounting it above and slightly in front of your seating aimed at you. That might get you some near field midbass punch. The floor would also work but wouldn’t look nearly as cool. ;\)

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