Maybe fit a TV in the hole? Pretty sure it's there to atleast use the dead space that they maybe didn't need for the acoustics.
I have to say that this BT system is something special. Reviews pointed me to think it might be too bass heavy but the treble can be set plenty sharp. Unlike a lot of the big BT portables, this is built to not fatigue your ears and the sound is so balanced and clear. No distortion, but I felt a few more clicks above 'full volume' wouldn't have hurt.
I know it's not a portable, but damn this is way cooler than a soundbar/sub combo.
Next to the TDK, DJ Tech, and Bumpboxx it is the cleanest crisp and deep hitting sound of them all. Obviously being a full plug-in unit it has to be better than those in this scale. If you get the chance to hear one, do it. I had the same reaction to this as when I heard the DJ Tech for the first time.
My wife even commented "this is goosebumps good" and "wow it's beautiful ".
Wonderful.