I don't have speaker boxes to do that, but my guess is is that depending on where I'm standing the sound will change in intensity. In some places the sound will constructively interfere, correct?
Try to get ahold of any speaker box and do that, you'll be able to see it for yourself. They don't need to be B&W speakers, you can do it with cheap ones. Even your computer speakers can do it (if you own a 5.1 system in a box you can just swap polarities, they'll probably be passive speakers).