Mshilarious check this:
youtube.com/watch?v=ESOrSKGojtg
I listened to many clips and what he claims is true. He is not bullshitting.
Of course I am not saying they nailed it like I illustrated above but somehow they did it. The box dimensions are 22'' x 20'' x 35'' which SHOULD sound boxy...
As we all know iso cabs tend to sound boxy because of the wave jams going on inside the box. The waves coming out of the speaker hit the wall in front and they are reflected back to the speaker and this is just a neverending cycle which is causing boxiness in the recorded sound. Something like...