Yeah Randy, interesting about the trim adjustment. I ended up with "full", but in a room much smaller than yours, of course. As to that big dip around 120Hz, as I commented in the previous reply, if that's a driver/floor bounce which would result from a little over 2' distance, there might not be a practical positioning change to eliminate it. I suppose as a temporary experiment you could raise the M80s a couple feet on some sort of support to see if that changed things.

-----------------------------------

Enjoy the music, not the equipment.