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
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.
Eric, Thanks for posting an interesting question. In my case, with dipole planars, the first reflection point is the back wall. I do not have any treatments on what would be considered a first reflection point typically for a directional speaker. Following to see if others with planars have experimented in this regard.
phcollie reminded me I do have adjustable vertical blinds behind the speakers at first reflection points on rear wall and those also have effects on soundstage and imaging depending on how I set them. As does opening or closing the sliding glass door. The plot thickens.......

Are you going to make me test out all the possible configurations now? I can tell you it all sounds great. Opening the sliding glass door tends to have a negative effect in the center of the soundstage.

The Ohms have some very unique and interesting characteristics when it comes to soundstage and imaging in that L shaped room I bought them for in particular that I have expounded on several times in other threads so no need to complicate things even further here though first reflection points and being omnis are a big part of it.