RE: All listening rooms need to be symmetrical

Room Acoustics Forum by Rives Audio

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Posted by KlausR. (A) on April 14, 2009 at 00:02:02

In Reply to: RE: All listening rooms need to be symmetrical posted by kirillzolotov@yahoo.com on April 13, 2009 at 15:12:23:

There is no evidence in the scientific/technical literature that first reflections have detrimental effects. In my case and to my ears first reflections do not affect imaging and asymmetric placement of loudspeakers has no negative effects.

I don't think that, in general, there is reason to apply first reflection treatment. However, each case is different so each case should be considered individually. It also depends on the loudspeakers. Loudspeakers behaving badly off-axis might benefit from first reflection treatment.

Aubility thresholds for first reflections are up to -25 dB for music, keep that in mind should you decide to treat using absorption. Another problem with acoustic treatment is that once you start treating first reflections you'd have to treat them all since those reflections that are not treated are easier to perceive and might then become a problem. Further, one should use absorbers that are effective down to about 150-200 Hz. They should further have approximately the same absorption coefficient throughout the frequency range.

Klaus

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Follow Ups Full Thread

Topic - Asymmetric speaker placement. - kirillzolotov@yahoo.com 17:18:37 04/10/09 (16)

RE: Asymmetric speaker placement. - Ethan Winer 11:35:02 04/11/09 (14)

RE: All listening rooms need to be symmetrical - KlausR. 23:07:52 04/11/09 (13)

RE: All listening rooms need to be symmetrical - kirillzolotov@yahoo.com 21:36:56 04/12/09 (12)

RE: All listening rooms need to be symmetrical - David Aiken 01:11:22 04/19/09 (7)

RE: All listening rooms need to be symmetrical - KlausR. 06:58:12 04/20/09 (5)

RE: All listening rooms need to be symmetrical - David Aiken 13:01:50 04/20/09 (1)

RE: All listening rooms need to be symmetrical - KlausR. 23:50:30 04/20/09 (0)

RE: All listening rooms need to be symmetrical - Ethan Winer 12:23:43 04/20/09 (2)

RE: All listening rooms need to be symmetrical - KlausR. 00:06:53 04/21/09 (1)

RE: All listening rooms need to be symmetrical - Ethan Winer 11:30:02 04/21/09 (0)

RE: All listening rooms need to be symmetrical - kirillzolotov@yahoo.com 15:43:33 04/19/09 (0)

RE: All listening rooms need to be symmetrical - KlausR. 23:08:00 04/12/09 (3)

RE: All listening rooms need to be symmetrical - kirillzolotov@yahoo.com 15:12:23 04/13/09 (2)

RE: All listening rooms need to be symmetrical - Ethan Winer 11:35:44 04/14/09 (0)

RE: All listening rooms need to be symmetrical - KlausR. 00:02:02 04/14/09 (0)

RE: Asymmetric speaker placement. - KlausR. 22:40:30 04/10/09 (0)

Follow Ups

RE: All listening rooms need to be symmetrical - KlausR. 00:02:02 04/14/09 (0)

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