BTW Eric, you seem to only be concerned with 1st reflections off the outside side wall. Don’t forget the effect of 1st reflections off the back wall, floor and ceiling. All important I think. Also consider the propriety of using the LE/DE methodology in setting up your room. When using box speakers I’ve always found a LE/DE set up (or something close to) best.
IMHO, this subject is almost as complex as rocket science due to the fact that the the results of set up and room treatments, most all of the sound folks hear is subjectively judged. Not a bad thing in itself but due to divergent expectations hardly a scientific approach (if one could even be heard). FWIW, I find it interesting reading recommendations for room corrections. Especially corner traps to improve low bass. Folks should look at an anechoic room and see what is really involved in setting up control of bass waves. Makes one wonder about ’bass traps’ typically recommended.
But to answer your original question, Yes 1st reflection points do matter and how you deal with them (not ’treat’ them) is very important if your goal is to obtain clarity and well developed 3 dimensional imaging. IMHO anyway.
IMHO, this subject is almost as complex as rocket science due to the fact that the the results of set up and room treatments, most all of the sound folks hear is subjectively judged. Not a bad thing in itself but due to divergent expectations hardly a scientific approach (if one could even be heard). FWIW, I find it interesting reading recommendations for room corrections. Especially corner traps to improve low bass. Folks should look at an anechoic room and see what is really involved in setting up control of bass waves. Makes one wonder about ’bass traps’ typically recommended.
But to answer your original question, Yes 1st reflection points do matter and how you deal with them (not ’treat’ them) is very important if your goal is to obtain clarity and well developed 3 dimensional imaging. IMHO anyway.