I know there are a lot of threads with SPL calibration but I haven't seen anything with respect to the after results. I calibrated all speakers (7.1) with an SPL at 75db per channel using the Sound and Vision disk. Started at -40 on my receiver since it said a comfortable level to listen to cd's. I ended up up raising my channel levels anywhere from +4 (SB, SL/R) to +10 (FL/FR) to get each channel to the 75db. Then I put in a couple of discs (audio/video) and the SPL was measuring at approx 90-95 db at the same -40 mark. This means to get to the 75db calibration level I was at -60. My question is two parts. With the above information did I do this correctly and is this somewhat consistent with what others have seen/done and what would be my "reference level" volume setting with this type of calibration.