My tweeter level and ear level is 37 inches. I am using an Ikea Poang chair (really like it) I have perfect alignment. My speakers are Sonner Legato Unum with the factory stands.
When I have the QLN Sonora's in place I am 2 inches lower but that is not bad and they sound fine. Guess I could sit on a pillow.
Hope this is some help??