Thank you for the recommendation. I have Dynamic EQ on. DV even on light just feels like it takes a lot of the "fun" out of what I am watching. It just feels like a lot less bass even with DEQ on. I do often turn DV if I am watching a movie with loud parts late at night but keep it off most of the time. DEQ stays on all the time. I want as much bass as I can get since I do not have a sub. I have not seen any different DEQ settings unless you mean the default "reference" and "0" settings. I kept those at the default. The system sounds good to me now. The audyssey had the center way too low in my opinion. After I turned it up in the levels settings under test tones it now is a lot easier to understand voices even with bass parts.I think now we understand your concern is about whether raising the center channel by as much as +5 would increase the chance of damaging the speaker. The answer is, there should be no issue because of your low listening level, and based on the other information you have provided.
On the question of preference, have you tried using both dynamic EQ and dynamic volume at the same time? You already know DV has adjustments, and DEQ has different offsets to choose from, so you may be able to find the right combination for you preference. If not, then your fall back is to go with the level settings that you have already found and like. The reason I am suggesting you try the other way, that is, to use DV and DEQ together is that if it works too, then it is better in the sense that those too features are tie to the "volume" such that it would self adjust as you change the volume. If you touch the volume then it is a moot point.