If you haven’t heard of the master speaker placement go check it out, theres a few guide videos on you tube.

This is the method used to setup the speakers in this video.

By far THE best way I’ve ever set up my speakers, the method precisely positions your speakers for the best bass performance, optimum distance between speakers to create a lifelike and laser sharp soundstage and perfect time arrival of the sound waves from both speakers to the listening position, cant recommend the method enough. Your speakers end up in a location thats within a 5mm x 5mm accurate spot any further in any direction and the sound changes.