I had my vp180 about 12" from the back wall.

I built a stand from 1x2 wood. Made it so it had no bottom.
basically it sat on the legs. I put a shelf about 12 " below and about 6" off the floor. Stand was 18" off the floor in rear and 19.5" in front so it was angled towards my listening position. worked well with no bottom reflections. wall behind was treated with 2" of sound board and a 1" gap between the insulation and 3/4" off the back wall.


Anthem MRX520
M5HPv4
VP160HPv4
QS10v4