I finally got around to it... I´m making half a dozen broadband absorbers.
Here´s how:
First its the frame,
![]()
Thats what holds it together (+ glue on the ends of the wood)
![]()
Place it on the floor
![]()
placed white fabric over the frame (thats gonna be the back of the panel)
![]()
then the put the pressed rockwool (75mm thickness) over and press it in, then cut the fabric,
![]()
then lay out the fabric for the front of the panel, turn the panel over and place it on there,
![]()
then some stapling,
![]()
then more stapling, followed by some more cutting of the fabric,