hi!
I've red in a this post (http://www.johnlsayers.com/phpBB2/viewtopic.php?t=662&postdays=0&postorder=asc&start=0) about a Diffusive Slot Resonator and I would know, how I can build them.
It was "barefoot" that has posted this image
External image, not preserved — original: http://www.johnlsayers.com/phpBB2/files/hobit1.jpg
and I would aks him, in which way I can build this sort of diffusor/resonator.
thanks, daniel :)