Rear Channel Ceiling Placement Help

[Sponge]

I am going to pre-wire the basement this week and need a little guidance

Due to my home's age I have a chimney going up the middle and a sump pump on the other side that has divided up my basement into 3 rooms essentially

Due to this my HT room is small (19x7 theater area) with a half of one wall wider with a wet bar (total room size of 19x10).

Because of the size design of the room I am limited to doing the rears in the ceiling. And because of the size of the room I want to do a couch (probably theater style seats) against the back wall. I don't mind pulling it a few feet way if that will help the sound...

Now where should I put the rears?

What is the minimum distance from the rear wall and side wall I can have to help avoid any bad reflections and imbalance?

Any advice or input is valued greatly! ;x(

[Sponge]

Oh one other thing...due to the size do you really think its worth pre-wiring a rear center channel?

[Chris D]

with that size theater, I'd say yes, it's worth it! I don't know a "minimum" or anything, but the centers of my rear surrounds in my bedroom that I put in the ceiling are about 2' from the side and rear walls. Works fine.