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Originally Posted by Anis  What should I look for then? |
Sorry, that wasn't to say that it wasn't important. Evidently two channel and multichannel listening requirements have different target goals for decay times. As I understand it, HT users often don't require or demand as even decay times across the spectrum. I can only guess it has something to do with the ambiance created by the surround speakers.
There is such a thing as an absorption calculator that estimates the amount of broadband one needs for a given space. I believe John Brandt has one on his web page. I don't know how it translates to HT use.
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Yes, you're perfectly right. I'm afraid of muting the room in high frequencies ! I chose the FRK to reduce absorption in high frequencies compared with plain 705 for example.[
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The FRK will definitely help towards that end. Without it the room would almost certainly be lopsided. Your proposed use of a carpet, however, may compromise your efforts. Again, I'm not sure if it is truly detrimental in a multi channel listening setup.
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Should I put only absorbers on side walls ?
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The general guideline is to use high frequency absorption on reflection points in relation to the listener where as your 705 FRK would work well to tame low frequencies especially when placed straddling corners.
There are more great tips in the "Stickies" threads at the top of the pages.
Good luck with a fun project. My only hard recommendation is to initially build such that you can arrange your implements of destruction as your understanding grows.