My rec
I would put in the box area below the TV. My current set-up is:
My center is above and sounds fine after SPL calibration. The AVR and BD are behind cabinet dooers and controlled by RF remote.
But I am changing to Salamander Hampton 339 and going to PRO-151HD
The center speaker is behind the top cover. Center-channel opening is faced with a removable grille that hides the speaker.