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Old 13th December 2005, 03:54 PM   #1
DariusM is offline DariusM  Lithuania
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Default If I use 1g dammping fill Vb1= Vb - xx litres

Hello. I searched in all internet and does'nt found any information about this subject.

If somebody know how much is xx in formula, if I use this dammping fills:
1: Wool
2: cotton-wool
3: Sintetic cotton-wool

Formula:
If I use 1g dammping fill - Vb1= Vb - xx litres

Vb - box volume without dammping fill
Vb1 - box volume With one gramme dammping fill
xx - ?

Please help me.
Sory if I made some spelling or grammatical mistakes
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Old 13th December 2005, 04:07 PM   #2
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Are you asking for the relationship between the amount of damping and the apparent box volume?

If so, I'm not sure there is a formula for that but perhaps someone else knows otherwise.
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Old 13th December 2005, 04:58 PM   #3
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here is a document I saved that gives an idea of how to use fiberfill.

the picture can't be clear IF you want tit just email me and ILL send it much better unless you have any other suggestion...
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File Type: jpg fiberfill chart.low.jpg (25.8 KB, 57 views)
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Old 13th December 2005, 08:08 PM   #4
DariusM is offline DariusM  Lithuania
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My e-mail is: dmsaudio@yahoo.com
If you have better versiom of this foto please send...

I think this qouestion is difficult and interesting, becauce if you know the answer, you can do very good speakers.
And Qtc parameter have a small bias. I think tolerance of Qtc will be ~ 1-2%
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