100 hz dip - Page 3 - Home Theater Forum and Systems - HomeTheaterShack.com

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post #21 of 76 Old 07-26-16, 11:14 AM Thread Starter
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Re: 100 hz dip

Thank you , i did some measurements already on some spots with the basstraps i have, and it does help. I just still got a question left concerning the equilateral triangle. I was just wondering how importand it is to stick on this rule when it comes to the width ( speaker to speaker) the thing is that i can get some pretty good results when the width is at a diffrent length. Also just for wanting to know how it works, how much and what does affect the width when talking about an equilateral triangle?. The same distance to the walls and the same distance to the listening postion already covers the speed and the frequentie response i would think.
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post #22 of 76 Old 07-26-16, 11:53 AM
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Re: 100 hz dip

Equilateral is just a starting point. No problem being inside or outside of it. Just a different presentation.

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post #23 of 76 Old 07-26-16, 12:24 PM Thread Starter
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Re: 100 hz dip

Oh really ? that makes it allot easyer. Thank you !

Last edited by matthijs87; 07-28-16 at 12:21 PM.
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post #24 of 76 Old 07-28-16, 12:31 PM Thread Starter
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Re: 100 hz dip

Im planning to treat the room a.s.a.p, but i dont want to invest more then necessary. What would you suggest ? If you look at the last photo you can see the front wall, it now exist only of a big carpet. Would you suggest treating the whole carpet (even behind the tv and the bottum) and what about above it ? what is your experiencie in what areas it is most effective ?
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post #25 of 76 Old 07-28-16, 12:55 PM
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Re: 100 hz dip

Something pretty thick on the rear - at least 6" and at least 2 2x4' panels.

For your side walls you'll want more surface area and thicker. Again 2 2x4's each side and at least 4" thick with a bit of a gap behind them.

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post #26 of 76 Old 08-08-16, 12:48 PM Thread Starter
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Re: 100 hz dip

Hi, im back for more questions .

That it is no problem getting inside or outside the Equilateral triangle was realy helpful
This way i have bin getting much better results and after doing some minor changes with EQ it looks pretty good i think(frequentie response is taken at (1/48 smoothing)

all though the angles in my setup are looking quite extreme. (check photo's)


Annyway my question is about the room acoustics, you suggested to get pretty thick panels' but does this still aply the same way now my frequencie response is okay ? You can check the photo's for my waterfall graph for more in depth info. I'd also like to know how to read this or better said "What is genneraly accaptable"? so i know how to meassure/read the graph.
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post #27 of 76 Old 08-08-16, 01:06 PM
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Re: 100 hz dip

Your decay time is still very long all the way through the range. I would do the thicker corner traps and on the rear wall and ceiling. The side walls you could probably get by with a little thinner.

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post #28 of 76 Old 08-08-16, 01:59 PM Thread Starter
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Re: 100 hz dip

Thanks!

My ceiling is kindof triangler shaped (you can see it at the photos in my first post. ) How would you go about that ? Is there a way to know where to place it ? like the mirror technique for the side walls for example? or would this be more of an trial and error thing ?
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post #29 of 76 Old 08-08-16, 02:03 PM
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Re: 100 hz dip

The mirror method would be best.

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post #30 of 76 Old 08-08-16, 02:16 PM Thread Starter
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Re: 100 hz dip

Great!, last question, how big and thick would you suggest for the ceiling as we didnt discuss this in the other post where you named all the dimensions. again 2 2x4's ?
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