[1] Really? So if someone says USB cables sound different and I said no, you would say the same thing?
[2] As to the rest of your post, I am unclear why you are addressing me.
[2a] I didn't give the blanket advice to go after reflections.
[2b] Indeed I said not to rush into that and provided a set of steps to evaluate the room.
[3] The latest topic is specific to the reflections being "bad." The research here is very conclusive conducted by multiple experts over some 40 years. Reflections are not bad. They increase sound power (total energy of what you hear) allowing better comprehension and extraction of information out of what we hear (think voices in movies and classrooms with students hearing teachers). Side reflections are beneficial because they turn the point source of a speaker into a wider area.
1. And what do USB cables have to do with "However, there are ALWAYS two sides to this coin." - When clearly "this coin" is referring to room acoustics?
2. I wasn't ONLY addressing you. ...
2a. Yes you did, you stated "
that is the opposite of what you want to do on walls." but you don't know (any more than the poster you're contradicting) if treating the side reflection points is appropriate or not in this particular case.
2b. Yes and I stated that was the best advice given up to that point.
3. I used an analogy with oxygen, what was it that you didn't understand? Oxygen (like reflections) is not bad, on the contrary it's essential, until there's too much and then it's poisonous! I'm not sure why you sometimes take the argumentative approach of: Quoting scientific research either out of context or misresprented/mis-interpreted and then demand other scientific evidence which disproves the research you've effectively mis-quoted? For example, "
Modern psychoacoustic research shows side reflections to be absolutely beneficial." - Either that research is seriously flawed, you've misunderstood it or are quoting it out of context. Side reflections are not "absolutely" beneficial, they are relatively beneficial, depending on the desired purpose and what you've got to start with! I have extensively thought of "voices in movies", in fact cinemas, play houses (theatres) and conference centres for example are typically designed to have much drier acoustics than concert halls because the higher amount of reflections which is beneficial to acoustic musical instruments is harmful to speech intelligibility. This acoustic design approach does not appear to contradict the research you're referencing, just your interpretation of it, because with "drier" we're not talking about reflection elimination but reflection reduction relative to say a concert hall. Side reflections are beneficial but only up to a point and you don't know if this particular room and speakers combination exceeds that point!
ALL acoustic problems can be solved using only absorption.
I know this isn't your quote but a quote from Ethan but obviously it's not true. There's at least one acoustic problem which obviously cannot be solved by using only absorption, the acoustic problem of a room being too dry/anechoic. Now that's not a problem we're ever going to run into, UNLESS we try to solve all the acoustic problems with absorption! Which is why in commercial music studio control, mix or mastering rooms we tend to use a combination of diffusers and absorption.
G