I will soon be building the dinner theater's baffle wall and need to "crap or get off the pot" with my final sound design. I KNOW that the correct answer is that I should hire someone to come out and measure, but if I had that kind of budget, I would not be building 23 speakers from scratch (I would buy them already built).
That said, I must use the expertise of those who are knowledgale on this forum in conjunction with all of the acoustical theory in order to determine what is needed. I have already built twelve 1pi speakers to be used for the theater's surround (I will post pictures later), and three 4pi speakers with all the upgrades for the LCR duty (again pictures are forthcoming).
I am now focused on what kind of subs to use, how many to make, and where to put them. So far, I have built only one F20 that will use the 390HF. My original plan was to use four F20s in the baffle wall under the 180" AT screen. In looking at Wayne's 3pi Subwoofer, it is also tuned to 20Hz but gets low passed at 200Hz (as opposed to 80Hz for the F20). The frequency response of the 3pi Sub is shown below (Sensitivity = 92dB, Max SPL = 115dB)
What I like about the F20 (well, what EVERYONE likes about the F20) is that the SPL is 106dB all the way down to 20Hz. So, now I am considering blending the two in the baffle wall. But, as I said; I need to decide soon as I will be building the baffle wall next week. I know people will say that I should place subs throughout the room and measure with a meter, but I am under a lot of pressure to keep everything out of sight. Below is an image of what I am considering right now. Is this too much? Not enough? Just right? It seems to be [visually] similar the speaker/sub placement at other commercial theaters. All qualified feedback is appreciated!