no matter how close you are from the speakers, the only way to avoid early reflection is simply by treating the early reflection point on the ceiling
Another reason I like dipoles, low early reflections from all directions but bags of late reflections
I think the typical floor reflection is at an angle of -30 degrees (vertical) relative to the listening axis. The typical ceiling reflection is about +40 degrees. Dipole attenuation at those angles is about 2 dB, right? That's just noticeable, isn't it? If that's the case (and correct me if I'm wrong), then I wouldn't call the earliest reflections from a dipole particularly "low".
literally a myth, dipole for anything then bass raise the amount of early reflections at the LP
I see. If you listen nearfield, that will make the floor and ceiling reflection angles more extreme, which with a dipole will lead to more attenuation than I was estimating. Thank you for correcting me. If you pair that with diffusers to scatter the energy and have it come back to the listening position from many angles, I suspect that would sound very nice. If the prominent late reflections are coming back primarily from bounces off the front and rear wall, with similar timing at both ears, I suspect you could do better.
@bbutterfield. Diffusers on the front wall should help, I haven't tried that. They are about 6 feet from the front wall and facing straight out into the room, so consequently being close to them my listening position is about 45 degrees off axis. I'm also about 4 feet from the rear wall so the reflections have different timings, if that's what you mean?
Yes, new fangled cardioid speakers like the Kii THREE and Dutch and Dutch 8c I reviewed have controlled directivity down to 100 Hz.
I think Brandon is correct, it is the directivity differences between the JBL M2 and the Revel Salon 2 is the main reason why they sound different, even if their fr is close...
I recorded two binaural recordings for a KEF LS50 and a JBL 4722. I can hear more of the room with the LS50's compared to the higher DI of the JBL's, in which I hear more of the direct sound. Even eq'd the same, the tone quality is very similar, but sound different because of the different DI and how much room sound is added. It is not as subtle of a difference that I thought it would be...
Depending on the source material, one my have a preference over the other, but I have always been a fan of hearing more direct sound field regardless of the source.
Will link to the binaural recordings when the article is up at CA.
I think Brandon is correct, it is the directivity differences between the JBL M2 and the Revel Salon 2 is the main reason why they sound different, even if their fr is close...
I recorded two binaural recordings for a KEF LS50 and a JBL 4722. I can hear more of the room with the LS50's compared to the higher DI of the JBL's, in which I hear more of the direct sound. Even eq'd the same, the tone quality is very similar, but sound different because of the different DI and how much room sound is added. It is not as subtle of a difference that I thought it would be...
Depending on the source material, one my have a preference over the other, but I have always been a fan of hearing more direct sound field regardless of the source.
Will link to the binaural recordings when the article is up at CA.
I was thinking about the inter-aural correlations from your reflections. A lower correlation leads to increased perception of spaciousness. Basically, if your reflections come more from the sides of your head, rather than from the front or back, that should increase your perception of spaciousness. If your reflections are coming at you from straight ahead, or straight behind, that's not preferred.
I agree it's good if the front and back also come at different times.
no matter how you angle it, youll still get early and late reflection from the sides.
Last edited:
early vs late reflection is related to suppressing the early reflection cause they arrive too loud at the lp within the first 20ms.
very hard to actually even have early reflection coming of the front wall, id argue its impossible in any normal sized room if you use monopole speakers.
late reflections is what adds to spaciousness, early reflection at the lp are destructive in nature
if you hear sound in your room, you have early reflections. no matter the directivity . hell even if you were to use a fullrange point source horn speaker and listened 5 feet away from the throat, youd still have ceiling, floor, side and back wall early reflection that would need to be absorbed
Last edited:
I'd beg to differ. I measure a very clean first 30mS from my listening position using controlled directivity speakers. There are no meaningful floor, front or sidewall reflections to speak of in the first 30mS.
lol
what does that even mean? how many db down within 30 ms?
what are your trying to make us believe? that all your early reflection are -50 db within 30 ms?
Last edited:
15-20dB above 400Hz from memory. I've slept since.
I wasn't trying to make you believe anything, but you are welcome to believe what you want.