My friend, there is absolutely no need to raise those levels post re-calibration. Any effects you heard with the lower levels after substituting the Crown amps with the XPA-5 was not real (with due respect
). Now, that's assuming you placed the mic in the exact same positions and you have not changed yous listening position, otherwise things could change a little, obviously. I am sure
@lovinthehd will agree with me on this.
If you measure the spl of the front 3, you will get the same spl (equally loud),as before even with the lower levels than they were when the Crown amps were in place, at the same volume position. Having said that, if it makes you happier to see the higher numbers, then yes, you are right, you can simply raise the levels of the other channels to match.