Having finally got my system up and running, I am looking into the issue of speaker placement. I have a largish rectangular living room. It is sunken 3 steps down from the kitchen, and is separated from it only by a railing. It is also open on one side to a 'sun room' with a wall that is mostly windows. A fireplace at one end of the living room limits options for speaker placement even further. It's my main source of heat at this time of year, so I can't place speakers too close to it.
As for placing speakers out from the wall, I have 3 large dogs, who sometimes get clumsy when they're playing. My 1970's vintage speakers have survived 40 years without any major dings in them. I'd like to keep it that way, thank you.
Like Buddy Holly says, "Ya' does whut ya' kin." (Thanks to Whitneyville for the quote!)