It is hard to convince folks that their "large" speakers should be small. No amount of reasoning will change their minds. After all, my xxx speaker has 20" woofers and makes my coffee so I will leave it large.

If you have a properly setup sub (or subs), then what benefit can you get from speakers that can never be optimally placed for bass? Why not let the sub do its job.

And yes, Dolby and THX know a thing or two about this. Why would you not listen to them?