Everything is fully maxed out, I'm sure of that. Also, my comment didn't seem to go through before. I've put it on and off battery power without any change. Thanks though.
From what I can tell in comparison with other laptops, for example on this Dell I have if I listen to it on speakers, I might have the volume at 75% for example, but when I switch to headphones, I have to turn it down to about 5% to 10%. On this computer, I can have the headphones up to 100% without deafening my ears. So, I believe it is programmed to lower for headphones so as to not require me to manually lower the volume so much, but of course with externally plugged in speakers I don't want that volume decrease. So, if that line of thinking is correct, this is an intentional feature, but I can't find anything in any of the settings that fully fits that description or makes such a difference (again Loudness Equalization has essentially no effect, possibly a slight volume difference). I'm stumped.