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Old 3rd March 2011, 05:21 PM   #1
BrianVG is offline BrianVG  Belgium
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Post Room acoustics

Hi all,

I'm using a Yamaha HTT 6230 reciever with JBL E80's.


Click the image to open in full size.

The photo shows my right speaker, but the two speakers are in the same position, they are surrounded by a wall and a closet. When I play my music/movies at a moderate level everything is fine, but when I turn it up it starts to get boomy. I was thinking to buy acoustic foam to place around the speakers(only helps for high and mids?) and some carpet in front of the speakers.

Does someone have any ideas that could improve the acoustics?
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Last edited by BrianVG; 3rd March 2011 at 05:38 PM. Reason: Problems with image
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Old 3rd March 2011, 05:30 PM   #2
GoranB is offline GoranB  Poland
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Dont use the tone controls, dont increase bass, if your receiver have direct input switch use it, also buy a carpet, speakers should be far from rear walls. I cant open the picture you attached, but my suggestions in general should improve the bass.
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Old 3rd March 2011, 05:35 PM   #3
BrianVG is offline BrianVG  Belgium
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Yes they should, but it's impossible to achieve that. Space is limited.

I'll fix the photo.

I'm thinking to buy this kind of carpet

Click the image to open in full size.
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Old 3rd March 2011, 05:45 PM   #4
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Does the speaker have a port at the back? If so, I suggest that unless you can move the speaker away from the wall, the port should, at least partially, be bunged up with a bit of foam to avoid boominess...

(Or that's what I've always understood)
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Old 3rd March 2011, 05:46 PM   #5
GoranB is offline GoranB  Poland
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[IMG]file:///C:/DOCUME%7E1/Goran/LOCALS%7E1/Temp/moz-screenshot.png[/IMG]Close that holl with sume sponge
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Old 3rd March 2011, 05:48 PM   #6
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Oops, just looked at the manual for your speaker, and the port is at the front. Ignore me...
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Old 3rd March 2011, 05:51 PM   #7
GoranB is offline GoranB  Poland
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Even the port is on the front side of speakers the bass will be boomy if you have the speakers close to rear and sides walls. I would close it.
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Old 3rd March 2011, 05:55 PM   #8
GoranB is offline GoranB  Poland
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Also try different speaker cables they should be short as possible.
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Old 3rd March 2011, 05:57 PM   #9
GoranB is offline GoranB  Poland
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Now i can see the photo, that closets ruins all
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Old 3rd March 2011, 06:06 PM   #10
BrianVG is offline BrianVG  Belgium
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Speaker cable is DIY 1,5mm˛: 1,60m long , twisted and shielded. I'm not going to change that because I don't believe that any exotic/expensive cable can improve sound.
So the closet ruins all? I was thinking the same. That's why I want to place some acoustic foam against it

Click the image to open in full size.

Question: is it worth it?
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