Quadratic Diffusers

Yes, the GIK look like classy barcodes.  Mine are dark wood with black cloth 48” tall.  Top left corner of photo in weblink.  They work quite well sorting out errant waves and simply clean up the soundstage as designed.

+1 Rixthetrick! 

I use tapered dual truncated conic wedge in cork a notably durable soft wood diffuser in a 3D holding structure, hand carved to inaccurately approximate an antique bowl. I place the diffuser bowl assembly on a leather and wood stand executed in the Eastlake furniture style. Presently the effect of added richness is greatest with a slight bias to the R channel. Some would say, they are just hundreds of wine corks…..i beg to differ….

RPG good 2 

but congrats Rix - you already know more than you know…..