Okay, so I seem to have found a fix, although it doesn't really make sense. I went into the settings on the Onkyo for Audio, and found one that said "Loudness Plus." It was set to "On." I switched it to "Off." I figured my next option would be to then go to late night setting from damacman's link, but would try one at a time and see the effect. Switching the loudness plus to off, I noticed that the volume did not need to be turned up as high as before for me to hear at the volume level I previously had it up to. I have a hearing issue in one ear, so I am keenly aware of what the volume level settings are. I used to have to turn it up to 55 - 56 whatever, as displayed, but noticed that the comfortable volume level was substantially lower, now at like 46 - 47. When the commercials came on, none were louder than the show program, and in fact, some were at a lower volume than normal making them more difficult to hear for me, which was fine with me. End result is that I turn the volume up lower, apparently have the same loudness output as before, and no commercials boom at a higher volume than the program material. Not sure why loudness plus would have that affect, but it did. Maybe that will help others with a similar problem. Thanks again for the responses