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Old 13th March 2008
Lives for gear
Hannes_F's Avatar

Originally Posted by Lissajous View Post
Hannes F,

What was your criteria for choosing the 3 rayls values?

Also, while this calculator seems useful, it seems very hard to find the acoustic impedance of many of the absorption products on the market to make any kind of informed comparison. Thoughts?

5000 Pa*s/m² is the material that I can buy cheaply around my place.

16800 Pa*s/m² is a value I have read for Owens Corning 703. Although other numbers that I read are 25000 Pa*s/m² for 703 and 30000 for 705.

45000 Pa*s/m² is a value that was asked for by somebody in another thread.