I have a 15x23 room would either of these make good surrounds? Or would they be overkill and I should get something smaller? I see the HT-8s are 7.25" deep and the HT-10s are 8.75" deep. I would like to put these in columns. If this works, I might cut into the wall so the enclosure sits in the wall some, and the rest sits in the column. Or could I use these as a Infinite Baffle in the columns? Or do they need enclosures? If they need enclosures, can the boxes be made shallower and sound ok? Thanks in advance, i'm sure i'll have more questions.