GoodSoundClub - Romy the Cat's Audio Site

In the Forum: Audio Discussions
In the Thread: Romy The Cat's new Listening Room

Post Subject: AbsorptionPosted by jp on: 10/12/2010

In my room, the bass I get without any sort of room treatment is adequate. If anything my room was just bright and considering I did not have any carpeting I had to do something about it.

I find absorption to be detrimental and subtractive to sound. It seems like absorption is more a bandaid than anything, but not to say that absorption is useless. Ive used 1 - 4 inch thick foam and 3 inch thick fiberglass panels which diffused high frequencies as well in varying quantities and positions.

I use mostly diffusers and cd wall cases. I dont use much absorption except on the first reflection points on the ceiling and front wall in front of the tv. Even in those spots I prefer to use diffusers, however it is a hassle to install and move them in front of the tv whenever Im using them. I sit pretty close to the back wall- about 3 feet which is bad for sound. Using diffusers- skylines, qrds and even a combination of them- even this close to the back wall was highly effective.

You can try building custom QRDs according to the frequency you want to diffuse. Some of mine scattered from 570 up and diffused from 1140 hz up to around 6000hz, requiring a seating distance of about 3 feet. Personally I think Qrds painted to match the color of the wall running horizontally along the top and running vertically along the column would be excellent and would not look so obvious. Perhaps a "flutterfree" design.

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