My gosh look at the people without an understanding of acoustics (probably who didn't even read the article in detail) puffing their chests.
While bipolar and omnidirectional speakers obviously were not a consideration for any of those articles, Klipsch would still come into consideration and for any normal dynamic speaker, it would come into play. Really how many of the people responding actually read the article in full and understood it before replying? Thank you Erik for obviously digging deep enough to see the comment w.r.t. damping.
russ69, the long wall is rarely the best wall for speaker placement.
twoleftears: Sorry the 2nd sentence is absolutely correct, but your wrong conclusion is certainly possible if you didn't actually read the article or understand it.
For those of you far more interested in extolling your "expertise" instead of learning, the articles very clearly discuss the aspects of moving your speakers into the room. Heck, they even talk about the distance from the front wall, and what frequencies that causes issues with, and how far they need to be out from the wall, even dependent on the frequency response of the speaker. IF you had read and understood the articles instead of being keyboard warriors, maybe you would have discovered that.
If you can't move your speakers out from the wall, which can be often the case in small rooms, home theaters, small mixing studios, etc. then you need to deal with having the speakers close to the wall, and if they have to be close to the wall, it is often better to have them really close. Why? ... well if you read the articles you would know. It is because of the frequencies affected, the closer to the wall, the higher the frequencies and the easier to address with acoustic treatment. Will you get boundary reinforcement. Yes. Do the articles address this? Yes. Again, if you read that, you would know that.
The articles were written by people who obviously have a much deeper understanding of speaker placement, acoustics, and general implementation than most of those commenting.