I had a couple questions about proper speaker setup.
1. I was reading about the "38% into the length of the room rule" and I'm pretty close to having my listening position set up this way. However, within the same article (realtraps speaker setup), there was this:
"the worst place to sit is exactly halfway back in the room, with your ears halfway between the floor and ceiling, or halfway between the left and right walls. You shouldn't put loudspeakers in those places either. Loudspeaker tweeters should be at ear level, but you should raise or lower them a few inches if needed to avoid having the woofer exactly halfway between the floor and ceiling. Likewise, while left-right symmetry is important for proper imaging, you could optionally offset your listening position a few inches to either side to avoid being exactly halfway between the left and right side walls."
Based on this, when I run audyssey calibration, should I not put the mic at my listening position (centered between side walls) for the first measurement but instead maybe place it 6-12" to the left or right of where I would normally sit? My main listening position is right in the middle of the two side walls (16' wide, so I am sitting about 8' from each side wall).
2. I have been fooling around with sub placement, trying to get the best sound until I get a mic for REW so I can do some measurements. However lately, each time I move the sub and then rerun audyssey, I am noticing that the speaker levels audyssey has set for the side surrounds has changed from -1.5 to 0, then to +0.5 and now most recently +1.0. Also the 3db low end roll off point was usually 60 hz, but i seen it jump to 80 hz and now recently its at 40 hz, the last few audyssey runs. Nothing has changed in the room other than me moving the sub from the back of the room to the front. What could be causing this?
My side surrounds are at 90 degrees from listening position, audyssey calculated distance of about 7.7-7.8 ft and I have the tweeters placed at about 42" height (which is about 6" above ear height (36")). Should I raise my side surrounds up a bit? I always wondered if they should be higher, but I have read that either at ear level or slightly above ear level is correct. I assume 6" height between tweeter and ear level is considered slightly above.
Thanks for your time