Couple of questions in the early planning stages of my theater.
What do you think of pre-made acoustic panels like these
? Are they good performance-wise? My company can get them as a dealer, and I like the way a darker color GOM covered panel looks on a black lower wall. If I got some 4'x4' or 4'x longer, and did them across the bottom, would an inch or more of space in between each panel for aesthetics hurt performance much? I think butting them right up to each other might look strange, but spaced slightly apart, they kind of look like art. How about some idea on cost for the "right" way to do it, with GOM fabric stretched over the JM duct liner stuff? Any idea about how much it costs to do it that way for a room 14'x 18' to 4' high? I would prefer to just do a moulding at the top & paint above instead of fabric all the way up if I use the fabric method. I will be having a GC build the room. So I would need to factor cost of materials and understand if an average competent GC can install this stuff & how long it might take. The pre-made panels are in the range of $280 for 4' x 10' so that gives me an idea to compare against. Let's leave the front wall out of the equation for now as I will need to treat it either way. And that brings me to my next issue:
I will be moving a very nice family room projection system into a new dedicated room. More info & pics of current setup here
Note I have not updated that thread yet, but I am now thinking of abandoning the dual front/ rear two sided projection. I will update that thread as to why. Still not 100% sure.
Regardless, I LOVE my rear projection image and deep blacks I get from the screen, and think I now want to use that in my new dedicated theater if I can swing it. The question is how will it impact the acoustics (I'm guessing not well) and what if anything can I do to help? The screen is 80"x45" and it is 1/2" thick optical rear projection glass (not plexi.) It will go into a wall that is probably about 14' wide. It will have a rear projection room behind it. Glass screen framed into that separator wall like a window. I can treat that wall (and the back side too, if necessary) with whatever will help. But of course, unlike most of you, I cannot treat the area behind the screen, as the screen is glass.
Other info: the room will probably be about 17' to 18' deep. I have two full range tower L/R speakers w/ 12" sub/10" passive radiator for mains. One additional 15" stand alone sub. Thinking two rows of 3-4 seats each, back row on small riser. Probably a modified stage with three decoupled sections, sides filled w/ sand & middle w/ insulation (this is not on ground level.) Ceiling height to be 8' range, with two small areas about 17" lower. Screen (if I go RP, or keep my original dual FP theater/ RP family room idea) will be on the lower side, about 29" AFF due to where the RP screen is now. Actually, if I build the RP room over I can make that higher if needed. So I could put the center above or below.
Any info or tips on these issues for planning my acoustics most appreciated. Also, are there any good room planning software programs out there that are free or close to it, so I can play around with ideal room dimensions and seat/speaker placement while in the planning stages?