Thoughts on Microsuede as a Cover

Just a quicky follow-up... Yesterday I went ahead and purchased some breathable cloth that vaguely resembled the microsuede (at least the color match was close), its feels a little like polar fleece and is very easily breathable (when placed over the nose and mouth it feels like nothing is there)... cost was all of $12 for 3 yards of the stuff (@60" wide). So today I was ready to swap out the microsuede fabric for this 'polar fleece-like cloth' but decided to first take some REW baseline readings to use for comparison later. I built the absorber with an easily removable grill (attached with industrial strength velcro). So I took a reading with the grill in place and then just for the hell of it, I removed the grill and took another reading. Nothing else in the room was changed... the mic was on a tri-pod and unmoved and I remove the grill from the room completely. After comparing the graphs from these two readings, I determined it wasn't worth the effort to replace the microsuede as the difference was so minor... that tiny (3dB) bump at 2k. Below the graphs are in this order: First is with the microsuede grill on; second is with the microsuede grill removed; third is a comparision graph of the two previous graphs

Whoa, don't jump to conclusions too quickly here... I don't know what decision exactly you are referring to but you should keep in mind the posted FR was specific to my theater and absorber location and listening position. This particular absorber is on the ceiling over the front row seating positions (a four-seater couch). The intention was to deal with any echo due to a rather large coffee table below which I don't want to "cover-over" and a poured concrete floor with thinly padded indoor/outdoor carpeting. I actually may have "robbed" too much freq energy from the 200-400Hz band as you can see from my REW FR graph but the way I look at it is, its still all a work in progress. What I'm getting at is if this absorber were located more for a first reflection or on a back wall or if I'd taken the REW 'reading' from a different seating location, like in the back row for instance, the difference between "grill-ON" and "grill-OFF" would most surely have been affected... how exactly I cannot say but just be careful and realize that my specific graphs should only be regarded as a very generalized depiction that there is indeed some effect in the higher frequencies, mainly those above 1.5K, but don't take it all too literally. Good luck with whatever it is you are trying to do.