A quick view of what it does. I assume the use of an unshaded array in a 2.5 meter high living room. Further more I assume a listening height of about 1 meter (seated ear height).
First a 2.5 meter high living room. Array on floor:
Next, moving the array to the center of the room:
Don't mind the irregular frequency response, instead look at the red line in the left middle graph plus the bottom vertical Directivity graph.
If your room isn't higher, it could work just fine. In fact, the resulting Directivity Index looks slightly better (minute differences).
One other advantage is that standing listening position will now almost be equal to seated position.
If the room is any higher than the 2.5 meter ceiling I mentioned, use a longer array! Or move the listening position up, that should work too
.
A shaded array would make less sense in this situation because the array center is above seated listening height and below standing listening height. I favored seated height and made my shading model ideal at that (1 meter height) listening spot.
I highly recommend getting VituixCAD yourself and modeling your living room! A
starter package of an array with the TC9 can be found in nc535's thread.