I have found the wee lil’ mic that came with my 3808 to be less accurate than my RS meter. Or it’s the other way around, who knows for sure.
After I run the auto cal feature, I verify with the RS meter. The auto cal is always pretty darn close, but off enough for me to make changes. Like already mentioned, I bump the center up 2 DB over the mains. I set all the other speakers to the same DB as the mains. The sub is a bit more time consuming. Because it does swing, I watch it for a spell so that I can see a repeatable swing, like 75 DB – 80 DB. They I simple figure what the middle of the swing is and adjust the LFE until the middle is 4 DB over the mains.
When I do this, I have the meter set up in a tripod at the prime location (same as location #1 in the auto set up). It is pointed straight up and at ear level. I crouch down behind it and adjust the AVR to set the DB levels.
