Looking into building some BBC style QRD diffusers for my room. If you read Tape Op, and you should, they did a really helpful article on these, called DIY Diffusors (which is what got me going on this). If you’ve made them before and have any tips, feel free to email me.
This is a picture of BlackBird Studios in Nashville with similar style diffusors (Massenburg doesn’t do anything half-assed!):
And if you’re interested in trying it out: