(I screwed my first attempt to respond by trying to get fancy with the code, so here it is again)
Romy the Cat wrote :
"...there is another solution that you might consider, that might be viewed as compromise for one-side as might not be view is compromised from other side. If to allowed ourselves to close eyes to midbass timing-integration and if the geography or your room would allow then I think it would be rational, also to think about corner-loaded sub-45Hz...I have to tell, that it is not so clean to me what I would choose if I were doing the project myself..."
For me the decision is simple; my current room does not allow for a corner-loaded horn.
Romy the Cat wrote :
"...In this decision, it will be something that you might not considering yet - you do not know how the specifics of your room will handle ether your straight 45Hz or the hypothetical 30Hz corner-loaded horn. Read my article about the “Embedded Micro-Positioning”. It might be extremely brutal. You might have a perfectly performing 45Hz straight horn that you will hang above your installation, but the horn will output nothing, literally nothing. The irony will be that considering the geometry of this 45Hz you will not be able to move it, as moving it even 6 feet away will have practically no effect
So, here is the best investment in your upper bass horn that I might propose you can do: in 10 days, during your Assumption of the Blessed Virgin Mary holiday, put your wife in front a specter analyzer and explain to her what to look for. Attach 40-200Hz bandpassed little sealed speaker to a tall 10-15 feet pole and a run across your room like a wounded in ass gazelle, while your wife is looking at the spectral analyzer is in results of your movement. You might do it yourself as well, if you use computer-based RTA then you might output the results to a large side TV. Do not forget make the same experiment for the different microphone positioning. This way it will not give you exact picture how “it” will sound in your room, but it will secure you from making large strategic mistakes or perhaps help you to discover a more winning topology in your given case.
No matter what you will be doing, if you have your room as your ally then it will be much better than to have your room as your foe..."
10 days!.... We don't take that long to Ascend the Virgin Mary (or any other virgins) over here!
So here is my proposed alternative plan : I will band-pass the wife, put her in a sealed enclosure (she is quite small) suspended from a pole while she rips on me again about how much she loves having plaster in the house. I will then measure her voice with the RTA!
Seriously, your suggestion is good, and I do have some (not a lot) latitude to move the small ends of the horns and change the firing angle.
jd*