Originally Posted by flrnlam
ONe is that, where's all the excess bass energy going? You'll really need some bass traps with limited absorption in that room, to help the "Q" of the room, from being to bass heavy and slow. I recommend accessing the space above the theater for this (do some research on this). Othewise, this will be a problem with high fidelity ultimately.
Smaller spaces don't absorb enough bass, while larger spaces absorb more bass.
Yes, you can still "EQ" things with speaker and seating, use and EQ, etc, to get flattest response possible from listening positions. STill, reverberation will be long in the bass if you can't get rid of the excess energy there.
Another thing is double drywall inside and out. I recommend double drywall on the outside only! Why?...it's going to be to "hard" sounding if you make the wall stiffer, which also hurts your "reverb" in the room in the bass....just a thought.
Also, the low ceiling in that room (8.5) will dictate etither more "controlled focus" design speakers up front, to limit ceiling interaction between you and the speakers in that setup. Otherwise, back-row listeners will get the worst of it in this respect.
Using typical "tweeter over mid/bass driver" designs, won't help you here, maybe benefited by "first order crossover" designs however. STill, THX, Dappolito's, Horn's, Planner/electrostat's, and other similar will help greatly!
Otherwise, plan on doing some acoustics on the ceiling! I suggest looking at what PMI makes in there "cine-pannels"??? I think that's what
they call em. Anyway, unless you do your own acoustics, these pannels look great, and work fantastic!...just a though. Also, bass traps in all the corners, treating all corner reflection points helps.
Also, I recommend Russ Hershelmann's theater seating/speaker layout scheme for you. That means "no center seat", as that's the worst in the room!!!! (lot's of peaks and dips in the response...not good!).
As things look now, your seating spots are difficult acoustic spots It appears. Also, speaker locations should correspond and compliment the seating possitions.
Do some research???...
Also, doing a 140" diag in that size room? I recommend against.
Even if you're using a 1920x1080 rez, progressive, it's still better smaller around 100-120" max! I think you'll run into seeing more than you want as far as pixles, scan lines, low rez, whatever. That's just me however.
WE all want a big pic, but BALANCE is critical with your viewing distance. I prefer quality over quantity myself. But whatever floats your boat...it's all groovy, you know?
Anyway, your sitting at less than 1x's the diagonal, which most pro's would shun, even with higher rez. To each his own however.
Back to sound, you might want to do some research on speaker placment before you cement things in. Otherwise, plan on some serious "EQ'ing"! Still, the foundation is seating and speaker location, locaiton, location! Don't get that right, and you'll never have serious sound.
Good luck...looks fun