Not sure what you guys are referring to as to setting subs over mains or speakers. ???
(We have a 5.2 speaker system)
We have the two subs level matched (63/64dB) with each individually measured at one meter with tape measure and Radio Shack, digital, sound meter. Combined, at the main listening position, the subs produce 69dB. At the main listening position, the combined two subs are set to the recommended 70dB standard which is +2dB over the original Audyssey XT setting. To obtain 70dB at LP, using the internal menu gain adjustments, the unit is currently set to -7.5dB, original Audyssey setting was -9.5dB. The center channel was bumped +2dB. All other speaker settings (mains and surrounds) have been left according to original Audyssey settings.
Is the OP asking, to what extent are we customizing speaker settings and what is our adjustment standard?
My understanding, at listening position, all speakers are suppose to be set to a 70dB standard using AVR provided pink noise.
Being that we're using two subs, I balanced the subs for equal output and then adjusted the combined sub output to 70dB. Our center channel was bumped a couple of dB for listenability. The gain for the mains and the surrounds have been left at their original Audyssey settings. Mains, center and surrounds have been left at original Audyssey set, large/small/LPF settings.
Is my above what the OP is asking about? ???