If you have a table saw, I have the answer for you, in the form of detailed DIY instructions for making your own Skyline-type two-dimensional primitive root diffusors. Mine are based on prime 31 instead of prime 157, which makes them simpler, less tower heights, but in head to head comparison with Skylines work just as well. (I have four Skylines on a back wall and two DIY's on a front wall, but did comparisons before arriving at that final setup.)
Email me for my DIY stuff if you could use it. Anyone else too. I've sent it to dozens of people and a few have used it with reported good results. DIY Argent Room Lens clones come with it, and they could be a good place to start.
Email me for my DIY stuff if you could use it. Anyone else too. I've sent it to dozens of people and a few have used it with reported good results. DIY Argent Room Lens clones come with it, and they could be a good place to start.