Does anybody change their speaker placement with different types of music and bands?

As fate would have it most speakers are placed way too far apart and toed in way too much. The best strategy is start with four feet apart and slowly move the speakers farther apart, preferably using ye olde XLO speaker placement track so you can hear when the sound snaps into place instead of groping around like a blind man looking for his contact lens. Chances are rather good that, all things being equal, 5-6 feet apart with no toe in will be best in most situation. 🤗

The only fail safe way to find the absolute best locations for speakers is using the speaker placement track on XLO Test CD or similar. All (rpt all) trial and error methods, laser techniques, etc. are only capable of finding local maximums. It’s like looking for a needle in a haystack by guessing. For a given room and speakers there is only one solution to the problem. All other methods are like trying to solve n simultaneous equations in n+x unknowns. And as progress is made with room treatments and tweaks the speaker locations will have to be re-established as needed.