An equalizer starts out at a flat line in the middle. No boost. No cut.
For you to just throw all the levels up to the top is just raising that same flat line up. Maybe you’ll get some more volume but that’s it.
And that, I think, is all you need. Volume. Either out of the speakers or the power of your HA’s.
The intent of the equalizer is to boost some frequencies and maybe cut some others as a “sweeten to taste”.
For your loss, The bit that you have up at 8khz doesn’t contain a whole lot of useful high frequency sounds. Some music harmonics would be about it. Then you’re flat line for all those important frequencies. Your left has some response up to 1500 so now we’re into three of your tv’s limited equalizer choices.
I would leave the 10k, 5k and 500 at default (see 0 below). I would put 1500 all the way up and 750 in the middle of the upper area. Say if the levels are -10 - 0 - +10…to 5.
Then crank it up 
But I’m no expert.