John Sayers' Recording Studio Design Forum Archive

this is my first posting and please excuse my english, it is not my real language.
i found an interesting building called "corner absorber" on lohn slayers website http://www.johnlsayers.com/HR/index1.htm
but the link to the calculator is dead.
does somebody has this calculator or know how to calculate the frequencies ?
many thanks
herb

Do a quick search in this forum for helmholtz calculator. The old one was found to be in error.

Unless barefoot or Knightfly comes along with the correct link.

Oops in the root of this forum there is a sticky.

Corrected Helmholtz Spreadsheet. LOL

thank you fr the help

herb