Quadratic Diffusers


I'm looking over the GIK Gotham N23 5″ Quadratic Diffusers. 

Anyone have any experience with these or similar? Care to comment?

What did you think of their construction, hanging hardware, aesthetics, effects on the sound, placement ease or difficulty?
https://www.gikacoustics.com/product/gotham-n23-5-inch-quadratic-diffusors/
hilde45
@mijostyn I was already given a couple of diffusers which are doing a great job. I'm interested in adding a few more given the current evidence I have that they work. I'm thinking about a diffuser able to operate in two dimensions.
The Quadratic Diffuser has a limited range (bandwidth) but do add 'dimension' to room treatment.
No need to go overboard though ... narrow down tour need then apply a suitable application.
The vertical slats (quadratic residue) can be combined in a hybrid diffuser / absorber like some of the GIK products.
I have 6 RPG diffusors behind my system and they may be causing me a bit of a problem. I am going to put several sheets of absorption in front of these to see if this helps the problem in my room. Leaving an adequate distance between the diffusor and source should be critical. 

I was at CES when the HFT type devices were introduced by I think a guy named Frank Chang. This may have been one of the first showings in the U.S. In any case they definitely change the sound, but I havent had them in my room so I cant say if they harmed or helped. I am a bit skeptical and would source them from someone other than S.R.

Thanks to mijostyn for the lead on the tiles. I am going to check these out.