Speaker Calibration

[Bradcny]

I have a handy little SPL meter that I am going to use to (attempt) to calibrate my speakers and subwoofer. I have some questions. What should I have my main volume at on my receiver? Should I use absolute volume or THX reference? The receiver has an option for both.

[olguy]

I set the volume the way I wanted while watching a movie and then used a meter to read the level. I then proceeded to use the meter to balance the speakers. I think, but may be wrong the THX vs absolute only refers to the indication of the volume level so use what you like. I use absolute on my Onkyo TX-NR609.