Originally Posted by dlinsley
Does anyone know how AT JR3 is?
I've finished building the frames to go around my screen - and am ready to wrap - but am wondering if instead of going for the pure velvet look I should use GoM for underneath the screen. I have 100% AT FR701 Onyx Black, which I used for my soffits (with insulation behind to act as small soffit traps) and will also be using it for the columns hiding my in-wall surrounds. My LCR are DIYSG Titan 615LX and IIRC the 15" driver covers up to just 300Hz. There are treatments behind my side walls, but I wasn't so concerned about 100% AT there.
BTW the original plan was to just use velvet for the first few feet, and then GoM Anchorage in Cobalt blue for the rest of the walls (and the GoM FR701 black for the 4 speaker columns), but my wife loves the look of the velvet and so had me go get another 38 yards at Joann's last week!
I had the same issue. I've ran "naked" subs for years but years ago decided to cover them with velvet covering and never even messed with measuring the difference. Subjectively there was zero difference.
So, I had the subs covered with velvet with speakers out in the room and covered the rest of the front wall with velvet. No biggie since I didn't have a AT screen yet.
Here is an old pictrue that shows the half way point of the project - 1 stack of subs covered with velvet and the other not.
Fast forward a few years and I bought different LRC to go behind the screen. Now I had a problem... I didn't want to have any issues with the sound but I needed to cover up the speakers.
I wanted to use GOM. However, it is so much lighter than the JoAnn velvet that it looked terrible IMO. Here is a comparison of the velvet and the taped up sample of GOM:
So I bit the bullet and just covered the speakers in velvet. It wasn't too bad because only the bottom driver of each JBL 4722n was covered by the velvet.
I measured with my omnimic and the difference was roughly a 1.5 db drop between 400-800 hz, which is easily corrected either with auto EQ or manual so to me it's a no brainer.
Here are more recent pictures:
Since your drivers are only covering up to around 300hz you may not have any difference at all, like I said above I didn't see any change until 400hz up to around 800hz.