As pictured, I built an entertainment center in my basement and have 3 TV's, 2 55" on each side and a 75" in the middle. I have a Denon receiver and bought the Monoprice HT-35 speakers as an entry-level 5.1 system with satellite speakers measuring 7.5" tall and 6.3" when laid on their side. The way the TV's are mounted, there is no room above the left tv because of a dryer vent soffit. Ideally, that's where I'd want to mount it. I could mount it horizontally in that space. I don't believe the HT-35 speaker will be affected much with a horizontal mount, do you? Otherwise, I could do location 1, 2 or 3. Layout 2 isn't my favorite because the right speaker seems like it would be an eyesore from that side of the room. Layout 3 also seems like it would stick out and be prone to my kids messing around with them. Layout 1 is the best choice if I'm not installing them horizontally. Would love any feedback. No need to judge my monoprice speakers or anything else, just some advice on speaker placement. Thank you.