Originally Posted by audioguy
Tweeter are not the issue. Sound is the issue. In a direct field or free field, the sound level (SPL) of a spherical wave decreases with doubling of the distance by (−)6 dB.
If you would like to learn more about how all of this works, just use google and then, while you may not be an expert, you will certainly be much better informed.
Which makes me wonder why suggesting atmos enabled speakers in a room with 12 foot ceilings..... seems like a long way to bounce sound back to the MLP. I wonder if there was a construction or architectural reason for not suggesting ceiling speakers.
To easycruise, I'm going to deviate from mainstream recommendations a little bit and suggest, with a narrow (3 seats across?) room and 12' ceilings, your atmos speaker options might be a little bigger than you think. I think there are some Triad ceiling options that would match well with your surrounds and still give you good seat to seat performance. Are you doing two rows? If so, side arrays are nice, but that does increase the cost quite a bit.
I don't see the reason for Gold surrounds and Silvers rears from a performance standpoint, maybe budget? Just me, but if you did go with monopoles for surround I think Silvers would work fine. You are right, however, hot spotting is a consideration.
Having said all that, has your integrator said anything about acoustical treatments and calibration? That needs
to be a "starting point" also.
I have an Erskine (Shawn) designed and built atmos theater with a similar length and height as yours. PM if you have any specific questions.