| I would build two Helmholtz resonators in the corners each side of the window.
An air tight box from floor to ceiling, triangular to fit on the corner
6mm MDF slats ranging from 1mm to 6mm gaps between the slats...
of course I believe a ceiling trap that sits on 4 legs would work better as you can have more air inside the trap thus effecting lower frequencies.
have you tried having the doors of your cupboard slightly open like 10mm???
It may act as a bass trap on its own.......
you could have airtight seals on your cupboard doors and drill the right amount and size holes in one side...this will make an excellent trap as your clothes inside would act as the "suspension"... |