Forgive me if I misunderstand your question, but the indivdual settings for the speakers is a function of calibration. If you are asking about calibraton using the Avia disk and an SPL meter, here is how I go about it.
After sitting down in the sweet spot, I set the Left Front to 0 on the receiver, play the LF test tone andturn the volume up so that the SPL registers 85db. I never touch the receiver volume control again.
Next, I go to the Center, play its test tone and adjust the Center speaker controls (+ or -) until I get 85db. I then cycle through all of the rest of the speakers in the same manner to get them to 85db. I set the sub at 88db because I like it a little hot. Calibration now complete.
