The room (space) is really a big deal as I and most likely many others have found. When I was doing H/W demo's (which for all the effort produced marginal results so I stopped doing it), I would painstakingly adjust and voice an instrument until it really sounded good. Then, without changing any settings, move the setup to another location. What sounded really good in the first instance, sounded very much "less good" in another. The same "rule" applies when we do commercial sound in different venues. Each one has to be adjusted on it's own.
I just finished a large church sound system that, for a church, has relatively low ceilings. What a bear. I figured probably few if any standing waves. 2 days later after doing everything in the book, I found out how wrong my thinking was. I'm still not happy with the result, but the client is. So, time to move on.
Rgds,
Ed
Rgds,
Ed