Hi everyone, I’m going to build a 2 channel audio room made of 8” CMU (reinforced concrete blocks) for the walls, concrete floor and ceiling. Room dimensions to be around 24’(w)x33’(l)x14’(h). I’m thinking of employing an acoustic engineer (https://www.acousticfields.com/carbon-absorber-wall/) who can build a absorption technology right into the walls. Actually room will have wood framed wall within the concrete wall that will utilize his bass absorption technology. The bass wall effectively take 1’ of space per wall. Has anyone heard of him?