Absorptive panels of that large a size directly behind the speakers will have an effect on soundstage. In my experience it resulted in a muted less spacious sound. I found absorption to work best on the back wall. I prefer tube traps for their versatility.
Toe-in is speaker and room dependent. My ESP speakers are designed to fire at 45 degrees into the room and cross axis in front of the listening position. In contrast the N802's are spaced a bit closer together and I set them to aim at the outside of my shoulders at the listening position. This is using the same room but only one speaker pair at a given time.
Toe-in is speaker and room dependent. My ESP speakers are designed to fire at 45 degrees into the room and cross axis in front of the listening position. In contrast the N802's are spaced a bit closer together and I set them to aim at the outside of my shoulders at the listening position. This is using the same room but only one speaker pair at a given time.