I bought a Athena ASC-1 today but it is too big for my TV wall unit. I.e. I cannot keep it horizontally, either on a shelf or on top of the TV. At present, I have placed it vertically, beside the TV. So basically, my choice is to keep the Athena ASC-1 vertically, beside the TV or buy the smaller Athena C.5 center cannel speaker that comes with the Athena Point 5 speaker system. What shall I do? What's wrong with keeping a center cannel speaker vertically?