I am renovating my small 10' deep x 15' wide x 9' height theater room including soundproofing with clips/DD/GG/etc. I currently own 3x Triad InWall Gold Omni SE/4 for my LCR, 4x InCeiling Gold Omni SE/8 for atmos, 2x InWall Silver Surrounds (bipole), and 2x InWall Bronze SlimSub/4 8ohm with 2x RackAmp 350.
Below are several questions/data that I need to put together a solid 5.1.4 plan for a pseudo-baffle wall and where to install backer boxes (for sound isolation) for my Triad speakers prior to drywalling. Hopefully between the owners on this thread and my dealer
can help dig up the necessary data.
1. As the Omni SE is a tweeter-midrange (T-M) design, have the T & M been time aligned to eliminate lobe tilting? If not, what is the lobe tilt that I need to design for?
2. Is there directivity / off axis response data (horiz & vertical) for the Omni SE? E.g., I may slightly toe in my front wall L and R speakers and want to understand the sweet spot and also for acoustic treatment plan.
3. As the Omni SE isn't exactly a reference-level SPL design, I'd like to understand where to cross over to mid-bass modules to achieve reference levels in my room. Is there sensitivity vs frequency data for Omni SE (and peak/rms watts vs frequency)?
4. Regarding mid-bass modules, I would plan to use my 2x SlimSubs as midbass modules (~80Hz-160Hz??) and use MiniDSP-like for the crossover/mixing. My front wall would be setup as LEFT(OmniSE,-40")--SlimSub(-24")--CENTER(OmniSE,0")--SlimSub(+24")--RIGHT(OmniSE,+40"). Specifically, LEFT speaker would use the left SlimSub, RIGHT speaker would use the right SlimSub. Question is what to do about the CENTER?
As the two SlimSubs are 4-feet apart they won't acoustically couple at quarter wavelength until ~70Hz, I am concerned that I will have M-T-M horizontal lobing if I use both SlimSubs for the center midbass, but if I don't I'm concerned that I will be shifting the CENTER midbass to just one side. Suggestions? Perhaps it requires careful crossover design in the MiniDSP?