Room Acoustics & Symmetry - AVS Forum
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post #1 of 10 Old 08-03-2012, 11:42 AM - Thread Starter
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I have two questions related to room acoustics and symmetry.

1.) My stereo is setup in my living room which has hardwood floors (with a rug), windows, leather furniture, and a bit of echo. The left wall is sheet rock with a handful of pictures on it. The right wall has two windows with blinds covering them. I have a RealTraps 2x4 HF Mini Trap on a stand at the primary reflection point of each wall.

I have the option to hang heavy curtains over the windows on the right wall. I believe that doing so should alleviate some of the echo. However, I am concerned that in a room where the right wall is heavily damped relative to the left wall I might experience some imbalance in the imaging or spatial reproduction.

2.) I could likely add some bass trapping in the front left corner of my listening room. However, I can not add any bass trapping to the right front corner. I'm not really sure if bass trapping needs to be symmetrical or not.

If you've got some experience in the matter, I'd love to hear your thoughts on my two questions.

Thank you
Matt
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post #2 of 10 Old 08-04-2012, 09:23 AM
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Room symmetry, especially in the proximity of the speakers and those wall surface boundaries between you and the speakers is vital. The general rule is dont do to one side what you cant do to the other (assuming they are equal to start with).

In your case, they are not.

Sounds like if you put the drapes up for the right wall, and take down the reflective pictures on the left wall, and put something there that has more or less the same absorption characteristics as heavy drapes (you could just put the same drapes over the sheetrock btw), then you would have some degree of symmetry.

But keep in mind heavy drapes are only going to affect high and upper midrange frequencies.


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post #3 of 10 Old 08-04-2012, 11:01 AM
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Jim has the right idea - the front of the room needs to be symmetrical, especially the sides area between your ears and the loudspeakers. Can you put an attractive wall hanging on the wall to match the same in front of the windows? Symmetry with bass trapping isn't so important. Better to put it wherever you can rather than omit some places just for symmetry.

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post #4 of 10 Old 08-04-2012, 09:36 PM
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put an attractive wall hanging on the wall
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I can't comprehend this.
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post #5 of 10 Old 08-05-2012, 07:34 AM
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Quote:
Originally Posted by Ethan Winer View Post

Symmetry with bass trapping isn't so important. Better to put it wherever you can rather than omit some places just for symmetry.
--Ethan

Agreed


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post #6 of 10 Old 08-05-2012, 09:58 AM
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Quote:
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Quote:
Originally Posted by Ethan Winer View Post

put an attractive wall hanging on the wall
--Ethan
I can't comprehend this.

I just meant something like a Navajo rug etc, to match something similar on the opposite side.

--Ethan

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post #7 of 10 Old 08-05-2012, 10:46 AM
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Quote:
Originally Posted by Ethan Winer View Post

I just meant something like a Navajo rug etc, to match something similar on the opposite side.
--Ethan
Like bookcases on one side and louvered blinds on the other?



BTW, what are those acoustic treatments sitting between the speakers? What are the absorption coefficients for those? biggrin.gif

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post #8 of 10 Old 08-05-2012, 05:14 PM
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BTW, what are those acoustic treatments sitting between the speakers? What are the absorption coefficients for those? biggrin.gif
Craig

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post #9 of 10 Old 08-06-2012, 09:01 AM
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Like bookcases on one side and louvered blinds on the other?

Both sides are more or less reflective, but it doesn't matter because both the window and shelves are forward of the reflection points.

--Ethan

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post #10 of 10 Old 08-06-2012, 11:03 AM - Thread Starter
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Thanks for the tips everyone. That was kind of what I was thinking but it's nice to have another set of eyes on it.
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