Round wooden diffusers

Does anyone know where I can find diffusers like the ones in the photo here?

I sem to recall Industrial Acoustics Corporation has a similar, if not identical product in one of their brochures.

Those look like something in the Master Handbook of Acoustics. Possibly build by the studio owner or the builder. If I'm right, those are just panel traps built with a curved front face. The bent wood face is more rigid than a flat panel, so it's effective frequency goes down quite a bit. And yeah, they diffuse nicely as a bonus.

Correction. They look exactly like a model in the Kinetics Noise brochure.

Just check the site out and I believe the ones you are talking abour are PVC and they are small: http://www.kineticsnoise.com/cwd.html I know I've seen them in a brochure before, just can't remember where. This is going to bug me until I find them.

I just found the site again where I got the picture from http://www.rbdg.com/projects/paragon/index.php Guess I'll e-mail them and see where they got them from.

That is the product class, except the brochure I have has 24"x72" models in it. Didn't pick up in the brochure that they were pvc though, not detailed.