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| Home Audio Acoustics Nice Site to calculate AbsorbersDiscuss Nice Site to calculate Absorbers in the Home Theater Installation and Systems forum; Nice Site to calculate Absorbers http://www.mhsoft.nl/Helmholtzabsorber.asp
br Gerd... |
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 04-25-07, 11:18 AM
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| Re: Nice Site to calculate Absorbers Just be careful. The formulas for the Helmholz absorbers are incorrect on that page - as they are on many web sites. There was an error in a book that's been propogated. The rest of the calculators work OK. Bryan | |||
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| 04-25-07, 11:50 AM
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| Re: Nice Site to calculate Absorbers Its allways risky with Helmholz Resonators. We had a lot of disskusiones and research and some works to, and we descoverd, that this formula is close. http://mb.abovenet.de/allabout-hifi/...pic,112.0.html This Formula should work f = 172,71 * Wurzel(A/(V * (l + (0,732 * d)))) mit f = Frequenz [Hz] V = Volumen des Resonators [in liter] l = Länge des Kanals in [in cm] A = Fläche des Kanals ( = pi * r*r) d = DURCHMESSER der Fläche des Kanals [in cm] pi = 3.1416 Thanks to Joachim from kea audio for this  Gerd | |||
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