Tweakers' Asylum Tweaks for systems, rooms and Do It Yourself (DIY) help. FAQ.

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RE: Help..!!!!

Posted by David Aiken (A) on May 21, 2009 at 13:17:02

In Reply to: Help..!!!! posted by junaid5888@yahoo.com on May 21, 2009 at 12:21:15:

Are you using ASC tube traps? If so, how do you have the reflective side of them oriented? I would try rotating the traps in pairs (front corners, front walls, side walls, rear wall which is single, of course) in order to see if that helps.

Another thing that comes to mind is that you have traps immediately behind each speaker. I'd try moving those traps to the first reflection points on the front wall.

You will need to be careful in placing the traps at the front and side wall first reflection points. They're only 9" wide traps so placement will need to be spot on. That won't be directly in front of the reflection point on the wall, but centred on the line between the reflection point on the wall and the speaker so it will be a little to the speaker side of the location of the reflection point on the wall. How far to the side will depend on how much space you leave between the trap and the wall. The greater the space, the further to the side. Actually increasing the space a little may help a bit and also leave you a little more leeway for error in placement.

I suspect that your best results will be with the reflective side facing away from the speakers for the traps at the first reflection points. You may get slightly better performance in the bass with the reflective side of the trap facing you or towards the speakers for the corner traps on the front wall. Having the reflective side facing forward into the room for the trap on the back wall may help provide a bit of diffusion. Ideally I'd tend to try to mirror the front wall treatment on the back wall if I could.

Now for one further suggestion which may or may not work to your taste. In his book "Sound Reproduction", Floyd Toole indicates that most people prefer the side wall first reflection points untreated because that enhances a sense of spaciousness that many people prefer but he also says that some people are very sensitive to those reflections. I don't know which group you'll fall into but I'd try moving the side wall traps to the back corners and see if that helps. It will change the sense of the spaciousness of the sound and that may take some of the forwardness off things for you, but it's also likely to change the breadth of individual images and some other aspects of the soundstage/imaging effects as well. You may prefer things with those traps in the rear corners or you may prefer it with them at the side wall first reflection points. The only way to find out is to try both locations.




David Aiken

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