My room is a 17 foot wide room by 12 deep. Eight foot ceilings I have my speakers placed along the long wall, which is at the front of my house. I've set it up this way out of necessity because I don't have a dedicated spot and i want to protect them from young children doing what young children do. I think I accidentally did something right, though, because with the right record it sounds like the music is coming from my front yard as if the wall wasn't there.
The speakers are about seven feet apart, about four feet from the outside walls, and about three and a half feet into the room. There's a couch between them. Any thoughts on what tweaks could be made (within reason) to make it even better?
If you can place speakers next to a wall the image is always better in the lower mid/bass because you aren't suffering the 'virtual speaker' effect with delayed sound bouncing off the wall. forming a virtual image of the speaker behind the wall which interferes with the main one. You may also get a bit too much bass if speakers are designed to be used away from the wall, and increase the possibility of room with resonances. The ideal scenario is to build the speakers into the wall - no wall reverb or diffraction effects from the speaker at all, but there would still have to be a mechanism for angling them in fopr correct to-in and it won't work in narrow rooms due to resonance.
I do find formulas/standards for speaker placement to be quite interesting in that, yes they often times do work as suggested, but then there are times that they do not. I had a speaker designer show up with a laptop, some rather $$ room software, and a microphone who then spent several hours measuring my room from various locations combined with the speakers under review in various locations (all based on formulas/standards) and while he was 'happy' he was not all that 'happy' with what he was seeing/hearing. I suggested that we put the speakers where I normally have mine (not by formula but by ear) and by golly, that was the best overall. Sure it would have been even better had I moved the couch forward several feet out into the room, but then I do live here and it is my living room so some compromises are made in terms of 'liveabilty'. Guess what I am saying is that sure, try what the formulas suggest and then go from there. Sometimes speakers can end up where one would not expect them to be fine. Like mine. I have one speaker with the sidewall/fireplace off the side and the other with a large entry into the dining room. Meaning that one 'see's side refection and the other does not. Yes the two speakers do not measure quite the same from the listening seat (when measured individually), but overall the room tends to balance that out when both are playing.