Not BeastAudio, but I can tell you that I'm very happy with my Certainteed Theater Black f
tiles, and while expensive - in the scheme of the room - they aren't too much.
They are built like a sheet of OC703 with black light absorbant material/felt? on one side. They will not rattle and what's more they will make a grid that rattles with traditional tiles completely silent. I painted my grid black, and got rid of the terrible standard tiles and put in these Certainteed tiles and I love them. HUGE difference over my standard tiles - and no more rattles anywhere in my ceiling grid -- and that's with eight 18" subwoofers in the room. My original tiles rattled terribly - to the point I thought I might have to replace the whole ceiling grid - that and dust falling down all the time. I have none of those problems anymore. First rate fix!!!
They have a light reflection rating of .03 and a NRC of .75 for the thin ones (5/8" thick) and .95 for the thick ones (1" thick). I saved money by installing the thinner ones, and putting 9" of R30 pink fluffy above them.
The tiles cost about $6-$8 each depending on where you buy them. (2'x4') Mine came in a packages of 16. I know several other people who have used them since then, including
. I got the recommendation from
. I don't know of anyone who has installed them who has regretted it in anyway.
I posted pics of them in my room thread talking to Brandon in post 1991.
You can see in some of the pictures of my room around that post count that they absorb much more light than even the blackest matte paint that I personally found for use in my room Olympic One - Black Magic. That's the paint I used to paint my grid. I think
found an even better black matte paint than what I used that if you are starting from scratch you might check out. I don't recall the name of it. Something with mouse in it? Perhaps he can spring in here and give you the lead.
Notice how the tiles don't reflect light compared to the grid. The matte black paint reflects a bit of light, but it looks worse on camera than in person. When the lights are off in the room, the ceiling is like a black hole to your eyes with that 3% light reflection rating.