How calculate Akustik hangers ????

Hi erverybody. since im here in this forum i have this question, but i can't find an answer jet. How is the right formular to find the centerfrequency of an akustik hanger like everybody use here in the forum. Its clear that the mass of the material is impotant. But in which way the dimentions have an influence to the freqeuncy?. And how much does the glued insulation take effekt of the work of the hanger. It will be wundefull when someone have a formular for calculation. thanks for help peace mika :D

Mika - as far as I know there is no formula for the hangers. When placing them in a corner they obviously change shape as the corner narrows so you get a variety of mass etc. When placing between two walls, as in a ceiling, I divide the distance by two and place a hanger in the middle point. I then divide the distance again and place two more. Then I divide again and and add four more - get the idea? this places the hangers on the modal positions. cheers john

Thanks for reply john But this answer ist not enogh for me to be shure waht i can use for well working hangeres. What mass whould work for the typical problem bassfrequncy' s? Is it ok to use normal 19mm woodpannels, or is it needed to use fieberboard. I think a 4mm woodpannel for example is not thick enough. What kind of materials do you use typicaly in which dimentions? Thanks for your attention and help peace mika

push 8) come on. erverbody use it, so anyone must know the answer. please help