| Walls don't normally go very low unless specifically designed to do so and on top of that they arent normally made to play with doors opened.
So alot of non walled vehicles would have the advantage with a low note and doing decent spl. Run the numbers yourself and you will see why theres one class.
I have personally measured many vehicles that have single/dual 10's that peak at low 30's and do 142-145 BR with doors open. Thats the beauty of the competition.
__________________ -Donald Hebig
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