I saw the other thread on basement ceiling acoustics, but it's more about sound insulation/isolation. I really don't care (well, not willing to) about sound proofing my HT room. It's a low ceiling, and after putting in a floor, and carpeting and the like, then trying to add in double layered floating ceiling or something isn't worth it. Anyway, I don't have a picture, but it's easy to visualize. About 7 foot ceiling, and the HT will be oriented with the floor joists running across the width of the room. I was thinking of just leaving the joists exposed, and painting them a nice dark color. I was thinking that this would leave me with a nice diffuse sound from the ceiling, while all the joists block any direct reflections coming from the front speakers. If I put drywall up there, then I'd have to treat the ceiling to eliminate those first reflections, and i'm losing valuable inches of headspace, and just creating another acoustic problem that I'd have to fix. Does that make sense, and what do the acoustic experts think, am i being logical? Another option would be putting fiberglass in between the joists, and covering the ceiling with fabric, thus not losing any space, and it could serve as either a mid-high absorption up there, or I could use hard fiber boards and use the joist space as broadband bass absorbers. I could also put helmholtz resonators up there too. And I was also pondering the option of something like ASC's walldamp, not for isolation purposes, but for bass absorption. Is this necessary(and worth the cost), or would this kill the bass in the room *too* much. Thanks for the help and suggestions.