Are the dimensions correct?

Are the dimensions correct?

Picture A, performance (the volume under certain circumstances) may be reduced. In a multi-way speaker system (a loudspeaker casing with, for instance, a high tone and a low tone loudspeaker), the balance between the speakers can get distorted.
Picture B indicates what could be considered correct.
Pictureis C the ideal situation.
Picture D is also excellent.
Picture E is correct from a technical standpoint, but it looks clunky.
Picture F is the correct situation.