Yes agree and good point.Panel size matters a lot with planars for dynamics as the range of travel of the drivers is quite limited. I had enormous electrostats that I used as subwoofers (2.4 meters tall and 55cm wide) and smaller panels (still 1.7 meters tall) for 100Hz and up. That had huge dynamics but the panel surface area was probably 2x or more than your 30.7s.