Solved! Go to Solution.
Front and mid-way to a wall in a larger room; corners are great in smaller rooms.
By the way, here is an article that may help you: where do I place my speakers for the best sound?
I found this as well -- let me know how this works for you. Speaker placement
Hey, here is a related article on your overall system: How can I set up my Marantz for surround sound?