If you want lame advice DON'T do this!

@secretguy Relatively speaking, yes I'm new here. But like everyone else I can throw in my $2 (adjusted for inflation).

I'm all in for a good debate but surely we can do this in a civil fashion without name calling. (Not suggesting you are) 

OP, you say, "Every professional installer (either for the home or the studio) measures, tweaks, measures, listens, and gets it right."

My experience is otherwise. I've owned systems from 2 figures to 6, and every one of them was better than what the pros did in a public building near me. 10 days ago I was treated to one that was even worse.

Of course there are experts who know what they are doing. The famous Cox, who did the research on room dimensions is a superb example. He found that most rooms are just plain bad, and that the difference between good and just OK can be as little as 2 cm in one dimension. Ignore the science at your peril - like some pros it seems.

You know there are many variables that make a system sound good so why not just be gracious and ask the poster questions.  All of this is subjective even if technically it says otherwise.  

I would never put my TV and surround system in a dedicated listening room, regardless of what somone else does.  You are compremising one or the other.

@oldrooney 

but it is not easy to master if you’re not familiar with acoustic measurement taking.

You already learned to move your MLP and what did that cost? Time, maybe a learning curve. Imagine if you didn't have that information and attempted to "fix" it by buying new equipment. It would be money down the tubes. I went through the same thing, instead of flushing dollars I went to doing what you are going through. Moved my MLP forward so its equidistant from the back wall, placed my speakers a t precise angles using a tape measure and a laser pointer, measured again and it was better, critically listened and WOW. Not bad for an afternoons work and I didn't need to buy new gear.