Does the first reflection point actually matter??


Hello my friends,

So please read the whole post before commenting. The question is nuanced.

First, as you probably know I’m a huge fan of the well treated room, and a fan boy of GIK acoustics as a result, so what I am _not_ arguing is against proper room treatment. I remember many years ago, perhaps in Audio magazine (dating myself?) the concept of treating the first reflection points came up, and it seems really logical, and quickly adopted. Mirrors, flashlights and lasers and paying the neighbor’s kid (because we don’t have real friends) to come and hold them while marking the wall became common.

However!! In my experience, I have not actually been able to tell the difference between panels on and off that first reflection point. Of course, I can hear the difference between panels and not, but after all these years, I want to ask if any of you personally know that the first reflection point really matters more than other similar locations. Were we scammed? By knowing I mean, did you experiment? Did you find it the night and day difference that was uttered, or was it a subtle thing, and if those panels were moved 6" off, would you hear it?


Best,


Erik
erik_squires
YEs, the goal of treating 1st reflection points is typically to safeguard against early reflections which smear the soundstage and negatively impact imaging but can also be used to change teh balance of direct to reflected sound which directly affects soundstage and imaging.

This brings up a great topic, diffusion is better for imaging than absorption. :) 


Two different but similar things. YMMV with each.  Diffusion would serve no purpose with omnis like Ohms.   More directional designs, like my Kef ls50s in the next room, yes.
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In my room which is practically square,a 2' x4' GIK panel on the ceiling has a positive effect.It works the same if it's placed on the floor opposite of it's ceiling position.Shelving and furniture seem to have a better effect breaking up sidewall reflections like brownsfan mentioned.