Thanks again for the valuable advice…. Yes, my room could certainly benefit from a bit of address treatment on the wall to the right of the listening position. But the problems with echoes/resonance don’t result in any detectable bass resonance. This is likely because of the fact that the room is open concept and therefore there are no corners of the room that are very near my speakers. Also, I have soft and very tall blinds covering a wall of windows behind my listening position.
I hate to bring it up because I’m sure this is a no-no, but I do have a flat-screen tv mounted to the wall between my speakers…. I angle it upwards to avoid reflecting sound directly towards the listening position, and am considering getting a light blanket to toss over it while listening to music.
Also good to know about the balanced interconnects; I would never have guessed that manufacturers include the connections for show only.
Finally, I agree it is not likely that I will have an issue with my TT between my speakers at moderate volumes especially. I just wanted to make sure I have a contingency plan in the event that the center placement didn’t work, otherwise the TT would be a waste. Thanks to everyone’s advice, I do have a contingency plan, although it will cost more if I need to go that route.