Some of us consider smarmy obfuscation rude.
I know how the DXD works: it's the same as any other push pull driver arrangement, and because the drivers are so closely placed in terms of wavelength, it doesn't really matter which side(s) the drivers are placed on. You could mount them both on the front panel wired the same and it would not affect the performance a jot (within a HT sub's range). I saw a similar arrangement for the first time in the 70's and I used the same in some of my last PA subs so I have more than a little experience with the arrangement.
You are the one who made the claim about it changing the polar pattern, you obviously don't understand the physics of how speakers work.
“You are not special. You are not a beautiful and unique snowflake.” Chuck Palahniuk