from the
manufacturer ...
Golden Horn is unique among the diffusers in the world market with its shape and flexibility. Crossover frequency is 2000Hz and diffuses into its basic design from 800 - 16000Hz. Diffusion up to 2000Hz is created by 40, 80 and 120mm high diffusorklossar to a number of 216st/m2.Diffusionen over 2000Hz creation of 9 squares each separated by 1mm thick partition walls positioned on top of each diffusorkloss. In this way, distributed incident sound i1944st fack/m2.
Diffuses into the field: 800-16000Hz
Width: 550mm
Length: 550mm
Depth: 128mm
Performance: Plastic Flame
You could use this info to reverse engineer using 2D QRDs if you wanted to.
N3's wont give you as good diffusion as N7's will though. For the stagger pattern depths, use QRDude to design an "outer" 2D diffuser of whatever order you need to get your required area. Model the outer diffuser without fins.