John Sayers' Recording Studio Design Forum Archive

Hello together,

i would like to make 1/4 of my room
complete death.

What ist the absorption coefficient of
12" 703 glassfiberboard (spacing 5" out from wall)
in the lower frequency at 40Hz and 80Hz???

Thanks for answers

Using some realistic extrapolation, 1.00 at both frequencies for random incidence and around 0.7@40 Hz and 0.9@80 Hz for normal incidence.

Andre