In comparing the wooden field elements to the Onshape model, it seems like there is a disparity in the horizontal distance from the front of the speaker floor bumper to the vertical riser at the bottom of the goal opening.
From the wooden model = 36.125" (10.25 front bumper gusset +55.25 floor beam -29.375 lower side wall width) OR from eDrawings 25.875 + 10.25 gusset depth (see pic attached)
From the Onshape model = 38.2" (measured from front surface at field to vertical riser to goal)
I have not found any detail for the wooden models showing how the subwoofer (floor bumper assembly) attaches to the speaker goal assembly. I assume the floor beam of the speaker goal assembly just butts up to the subwoofer assembly and would contact the gusset that holds the 120 degree angle between the front and sides. The depth of the gusset would add 10.25" to the horizontal distance to the back bottom of the goal opening.
Can anyone clarify please.