Hi dentdog,
I think this is the same guy that graciously published a lot of research on the effects of different diffusors and also great instructions on a DIY how- to:
http://arqen.com/sound-diffusers/faq/?awt_l=N6Exr&awt_m=3vamGTydekOvzB9&utm_source=diffusers...I was guided to this by randy-11 (thanks Randy) on another thread. As I am limited on workworking equipment, I thought of ways to build a quick and dirty replica using the DIY instructions on the link. I finally found some fluted wooden curtain rods from Bed, Bath and Beyond that looked similar to, but not nearly as good as, the custom-cut fluted-type he uses and ordered them. $112 just for six rods. Still would need to buy board for the backing plate and offsets and spend ?? hours trying to cut and build these "replicas".
Point being, I cannot imagine a better deal on a good diffuser than the one you recommended above. Pre-designed, pre-built, and ready to hang for $99. Available here on Audiogon. Whatta deal! The rods are going back to BB & B.
Best to you dentdog,
Dave