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How to calculate bass trap density
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June 15, 2017 - 8:31 am
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Hello Im currently treating my mates home av room. im looking to cover all 4 corners with bass traps.
Here at my hometown we can only get roxul rockwool. They come in many density such as 60,80 ,100 & 120 kg.
My question is,

1-what is the formula ?? and how to calculate how much density vs wavelength or room size my room length is 10 feet.
2- what is the thickness of the bass traps ?
3-what density should i use for my bass traps? im sure its 120kg? or should i double it ? use 2 of 120kg = 240kg Will this be able to absorb very low freq?

I cant get whole of owen’s 703 rigid fiberglass unfortunately ;-(

Also, for the first reflection.. what density should i use? 80kg one piece good enough?

Thank you for your time and pro comments

Cheers

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Chief Acoustics Engineer
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June 15, 2017 - 3:55 pm
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Hi A, What are the frequencies of issue? What is their amplitude or strength? Where are they located within the room? The corners of a room are usually not the area of highest pressure. Without data, you are just guessing and guessing is gambling.

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June 16, 2017 - 7:30 am
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Dennis Foley said
Hi A, What are the frequencies of issue? What is their amplitude or strength? Where are they located within the room? The corners of a room are usually not the area of highest pressure. Without data, you are just guessing and guessing is gambling.  

Hello dennis thank you for your quick reply ..

The frequency issue / 114 hz

The strength / +2 db

The location uper spot life and right corners

Thanks
Ahmad

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June 16, 2017 - 8:12 am
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Hi Ahmad, What are room dimensions?

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June 16, 2017 - 11:23 am
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Dennis Foley said
Hi Ahmad, What are room dimensions?  

Hi dennis

Length / 10 feet – 300 cm

Width / 9 feet – 275 cm

Hight / 8.5 feet – 245 cm

Best
Ahmad

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June 16, 2017 - 11:36 am
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Hi A, What is diameter and number of low frequency drivers? What is average listening pressure level ? My data base shows a Schroeder Frequency of 277 Hz. and a critical distance of 1.35′. I am also showing frequency spacial irregularities for this room size and volume from 43 – 331 Hz.

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June 17, 2017 - 7:50 pm
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Dennis Foley said
Hi A, What is diameter and number of low frequency drivers? What is average listening pressure level ? My data base shows a Schroeder Frequency of 277 Hz. and a critical distance of 1.35′. I am also showing frequency spacial irregularities for this room size and volume from 43 – 331 Hz.  

Hello dennis… The listening pleasure 90 db .. Im not sure about the low frequencies.. I think im a little bit short with acoustical knowledge .. am I able to get enough knowledge and information about how to measure a room and get the right numbers of frequencies and how to treat them and my room from you by buying ( All In One DIY Acoustic Treatment Build Plans Package) ?!

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June 18, 2017 - 8:18 am
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Hi A, Before you go buying a treatment package, let first identify what to treat. You need to develop a sonic strategy and then apply treatment tactics to achieve the goal you are after. Lets start by taking a look at your room. Fill out the information in this link: https://www.acousticfields.com…..m-analysis

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June 18, 2017 - 8:55 am
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Dennis Foley said
Hi A, Before you go buying a treatment package, let first identify what to treat. You need to develop a sonic strategy and then apply treatment tactics to achieve the goal you are after. Lets start by taking a look at your room. Fill out the information in this link: https://www.acousticfields.com…..alysis  

Hi dennis
I filled out the information form. But I really would like to learn how to identify and analyze any other rooms in the future as I opened a small acoustic company and im willing to learn to do it correctly so do advice me to buy your packages will I learn from them and get the treatment tactics or do you have a course that can enroll in please advice me thanks

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June 18, 2017 - 9:07 am
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Hi A, We have received numerous requests for such a course and training. I will give it consideration.

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