I’m trying to improve the imaging of my front l/r. Currently, I’m seated 10.5’ away, with the fronts 7.5” apart, ie a narrow 41 degrees. The width of the room is ~11.5’, if I placed my speakers in an equilateral triangle, like it’s supposed to be, that puts my speakers about 6” from the side wall.
My concern with this is the relative level/timing of early reflections. If my math is correct, this places the first lateral reflection 11” in front of the speaker at an angle of 27 degrees. Adding 30 degrees for toe in would make this 47 degrees. Since the distance from the speaker to the reflection is about 13”, the timing difference is just under 1ms.
Based on the directivity of my speakers, that should equate to an approximate 6dB drop in level at a 45 degree angle above 1khz (which, according to Toole, is the frequency range that matters regarding imaging distortions from reflections). Up to about 14khz the off axis sound hitting the wall should be spectrally similar to the on axis sound. Coloration of the sound is unlikely, I’m more worried about getting tight, focused imaging, avoiding the diffuse mess overpowering reflections might cause.
The reflection point will be treated with 2” Auralex panels, which have an NRC of 1 above 500hz. I have no idea how noise reduction coefficient translates to dB attenuation.
http://www.audioholics.com/room-acoustics/room-reflections-human-adaptation
Based on Tooles article, treating the reflections would not be a bad idea in my case.
Has anyone placed speakers close to a sidewall before and had good results? Bad results? Any suggestions?
Sent from my iPhone using Tapatalk