Speakers' beam isnt the same as speaker hight. I too set relitively low and made some 18" stands with about twelve degrees of tilt back. The low height has the driver closer to the floor boundry thus richer tone. I avoid on beam listening by having the driver go over my head instead of toe in behind me as that would create more side wall reflection. This enables a stage height just above my head and creates a 'you are there' instead of a 'they are here'
"and may powdered sugar fall upon your ears tonight"
"and may powdered sugar fall upon your ears tonight"

